404664331 has 8 divisors (see below), whose sum is σ = 410569760. Its totient is φ = 398768832.

The previous prime is 404664329. The next prime is 404664349. The reversal of 404664331 is 133466404.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 404664331 - 2¹ = 404664329 is a prime.

It is a super-2 number, since 2×404664331² = 327506441567355122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 404664293 and 404664302.

It is not an unprimeable number, because it can be changed into a prime (404664361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128605 + ... + 131713.

It is an arithmetic number, because the mean of its divisors is an integer number (51321220).

Almost surely, 2^404664331 is an apocalyptic number.

404664331 is a deficient number, since it is larger than the sum of its proper divisors (5905429).

404664331 is a wasteful number, since it uses less digits than its factorization.

404664331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4965.

The product of its (nonzero) digits is 20736, while the sum is 31.

The square root of 404664331 is about 20116.2703054020. The cubic root of 404664331 is about 739.6591631012.

The spelling of 404664331 in words is "four hundred four million, six hundred sixty-four thousand, three hundred thirty-one".