| Base | Representation |
|---|---|
| bin | 101001101101000… |
| … | …0000000101110000 |
| 3 | 10121112002002002100 |
| 4 | 1103122000011300 |
| 5 | 10331211400130 |
| 6 | 350504220400 |
| 7 | 46451031561 |
| oct | 12332000560 |
| 9 | 3545062070 |
| 10 | 1399325040 |
| 11 | 658978683 |
| 12 | 33076a700 |
| 13 | 193ba34a9 |
| 14 | d3bb8168 |
| 15 | 82caec60 |
| hex | 53680170 |
1399325040 has 120 divisors (see below), whose sum is σ = 4745276640. Its totient is φ = 369510912.
The previous prime is 1399325033. The next prime is 1399325041. The reversal of 1399325040 is 405239931.
It is a happy number.
It is a tau number, because it is divible by the number of its divisors (120).
It is a super-2 number, since 2×13993250402 = 3916221135142003200, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a junction number, because it is equal to n+sod(n) for n = 1399324986 and 1399325004.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1399325041) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64726 + ... + 83594.
It is an arithmetic number, because the mean of its divisors is an integer number (39543972).
Almost surely, 21399325040 is an apocalyptic number.
1399325040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 1399325040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2372638320).
1399325040 is an abundant number, since it is smaller than the sum of its proper divisors (3345951600).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1399325040 is a wasteful number, since it uses less digits than its factorization.
1399325040 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 18991 (or 18982 counting only the distinct ones).
The product of its (nonzero) digits is 29160, while the sum is 36.
The square root of 1399325040 is about 37407.5532479739. The cubic root of 1399325040 is about 1118.5091345423.
The spelling of 1399325040 in words is "one billion, three hundred ninety-nine million, three hundred twenty-five thousand, forty".
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