404664313 has 4 divisors (see below), whose sum is σ = 413274240. Its totient is φ = 396054388.

The previous prime is 404664283. The next prime is 404664317. The reversal of 404664313 is 313466404.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404664313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (404664317) 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, 4304893 + ... + 4304986.

It is an arithmetic number, because the mean of its divisors is an integer number (103318560).

Almost surely, 2^404664313 is an apocalyptic number.

It is an amenable number.

404664313 is a deficient number, since it is larger than the sum of its proper divisors (8609927).

404664313 is an equidigital number, since it uses as much as digits as its factorization.

404664313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8609926.

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

The square root of 404664313 is about 20116.2698580030. The cubic root of 404664313 is about 739.6591521342.

The spelling of 404664313 in words is "four hundred four million, six hundred sixty-four thousand, three hundred thirteen".