404872313 has 4 divisors (see below), whose sum is σ = 406039440. Its totient is φ = 403705188.

The previous prime is 404872309. The next prime is 404872373. The reversal of 404872313 is 313278404.

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 not a de Polignac number, because 404872313 - 2² = 404872309 is a prime.

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 404872313.

It is not an unprimeable number, because it can be changed into a prime (404872373) 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, 583043 + ... + 583736.

It is an arithmetic number, because the mean of its divisors is an integer number (101509860).

Almost surely, 2^404872313 is an apocalyptic number.

It is an amenable number.

404872313 is a deficient number, since it is larger than the sum of its proper divisors (1167127).

404872313 is a wasteful number, since it uses less digits than its factorization.

404872313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1167126.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 404872313 is about 20121.4391383917. The cubic root of 404872313 is about 739.7858602446.

The spelling of 404872313 in words is "four hundred four million, eight hundred seventy-two thousand, three hundred thirteen".