| Base | Representation |
|---|---|
| bin | 10111101110001… |
| … | …101010111110000 |
| 3 | 1000201212221202200 |
| 4 | 113232031113300 |
| 5 | 1303341124420 |
| 6 | 103254143200 |
| 7 | 12601565556 |
| oct | 2756152760 |
| 9 | 1021787680 |
| 10 | 397989360 |
| 11 | 19472232a |
| 12 | b1351b00 |
| 13 | 645b9382 |
| 14 | 3abddbd6 |
| 15 | 24e17b90 |
| hex | 17b8d5f0 |
397989360 has 120 divisors (see below), whose sum is σ = 1353693120. Its totient is φ = 104772096.
The previous prime is 397989343. The next prime is 397989367. The reversal of 397989360 is 63989793.
It is a tau number, because it is divible by the number of its divisors (120).
It is a junction number, because it is equal to n+sod(n) for n = 397989297 and 397989306.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (397989367) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53382 + ... + 60378.
It is an arithmetic number, because the mean of its divisors is an integer number (11280776).
Almost surely, 2397989360 is an apocalyptic number.
397989360 is a gapful number since it is divisible by the number (30) 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 397989360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (676846560).
397989360 is an abundant number, since it is smaller than the sum of its proper divisors (955703760).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
397989360 is a wasteful number, since it uses less digits than its factorization.
397989360 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 7095 (or 7086 counting only the distinct ones).
The product of its (nonzero) digits is 2204496, while the sum is 54.
The square root of 397989360 is about 19949.6706739735. The cubic root of 397989360 is about 735.5696818980.
It can be divided in two parts, 3979 and 89360, that added together give a palindrome (93339).
The spelling of 397989360 in words is "three hundred ninety-seven million, nine hundred eighty-nine thousand, three hundred sixty".
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