Base | Representation |
---|---|
bin | 10111110101111… |
… | …010111011111001 |
3 | 1000212200122221021 |
4 | 113311322323321 |
5 | 1304400323001 |
6 | 103405342441 |
7 | 12625015555 |
oct | 2765727371 |
9 | 1025618837 |
10 | 400011001 |
11 | 195883205 |
12 | b1b67a21 |
13 | 64b46600 |
14 | 3b1a8865 |
15 | 251b6ba1 |
hex | 17d7aef9 |
400011001 has 12 divisors (see below), whose sum is σ = 435097872. Its totient is φ = 367579056.
The previous prime is 400010993. The next prime is 400011041. The reversal of 400011001 is 100110004.
It is a happy number.
It is not a de Polignac number, because 400011001 - 23 = 400010993 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (400011041) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33150 + ... + 43576.
It is an arithmetic number, because the mean of its divisors is an integer number (36258156).
Almost surely, 2400011001 is an apocalyptic number.
It is an amenable number.
400011001 is a deficient number, since it is larger than the sum of its proper divisors (35086871).
400011001 is a wasteful number, since it uses less digits than its factorization.
400011001 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 10680 (or 10667 counting only the distinct ones).
The product of its (nonzero) digits is 4, while the sum is 7.
The square root of 400011001 is about 20000.2750231091. The cubic root of 400011001 is about 736.8130543379.
Adding to 400011001 its reverse (100110004), we get a palindrome (500121005).
The spelling of 400011001 in words is "four hundred million, eleven thousand, one".
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