404624644 has 12 divisors (see below), whose sum is σ = 709731484. Its totient is φ = 201844224.

The previous prime is 404624611. The next prime is 404624653. The reversal of 404624644 is 446426404.

It can be written as a sum of positive squares in 2 ways, for example, as 110502144 + 294122500 = 10512^2 + 17150^2 .

It is a super-2 number, since 2×404624644² = 327442205064253472, which contains 22 as substring.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115077 + ... + 118540.

Almost surely, 2^404624644 is an apocalyptic number.

It is an amenable number.

404624644 is a deficient number, since it is larger than the sum of its proper divisors (305106840).

404624644 is a wasteful number, since it uses less digits than its factorization.

404624644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234054 (or 234052 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 34.

The square root of 404624644 is about 20115.2838409007. The cubic root of 404624644 is about 739.6349818966.

The spelling of 404624644 in words is "four hundred four million, six hundred twenty-four thousand, six hundred forty-four".