400262905139 has 4 divisors (see below), whose sum is σ = 403805054856. Its totient is φ = 396720755424.

The previous prime is 400262905087. The next prime is 400262905199. The reversal of 400262905139 is 931509262004.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 400262905139 - 2⁸ = 400262904883 is a prime.

It is a super-2 number, since 2×400262905139² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 400262905096 and 400262905105.

It is not an unprimeable number, because it can be changed into a prime (400262905199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1771074689 + ... + 1771074914.

It is an arithmetic number, because the mean of its divisors is an integer number (100951263714).

Almost surely, 2^400262905139 is an apocalyptic number.

400262905139 is a deficient number, since it is larger than the sum of its proper divisors (3542149717).

400262905139 is a wasteful number, since it uses less digits than its factorization.

400262905139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3542149716.

The product of its (nonzero) digits is 116640, while the sum is 41.

The spelling of 400262905139 in words is "four hundred billion, two hundred sixty-two million, nine hundred five thousand, one hundred thirty-nine".