400004622631 has 4 divisors (see below), whose sum is σ = 400008021264. Its totient is φ = 400001224000.

The previous prime is 400004622623. The next prime is 400004622637. The reversal of 400004622631 is 136226400004.

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 400004622631 - 2³ = 400004622623 is a prime.

It is a super-2 number, since 2×400004622631² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 400004622631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400004622637) 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, 1516195 + ... + 1760356.

It is an arithmetic number, because the mean of its divisors is an integer number (100002005316).

Almost surely, 2^400004622631 is an apocalyptic number.

400004622631 is a deficient number, since it is larger than the sum of its proper divisors (3398633).

400004622631 is a wasteful number, since it uses less digits than its factorization.

400004622631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3398632.

The product of its (nonzero) digits is 6912, while the sum is 28.

The spelling of 400004622631 in words is "four hundred billion, four million, six hundred twenty-two thousand, six hundred thirty-one".