404216931 has 8 divisors (see below), whose sum is σ = 539155984. Its totient is φ = 269377920.

The previous prime is 404216921. The next prime is 404216941. The reversal of 404216931 is 139612404.

It is an interprime number because it is at equal distance from previous prime (404216921) and next prime (404216941).

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

It is not a de Polignac number, because 404216931 - 2⁶ = 404216867 is a prime.

It is a super-2 number, since 2×404216931² = 326782654614117522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (404216921) 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, 15010 + ... + 32151.

It is an arithmetic number, because the mean of its divisors is an integer number (67394498).

Almost surely, 2^404216931 is an apocalyptic number.

404216931 is a deficient number, since it is larger than the sum of its proper divisors (134939053).

404216931 is a wasteful number, since it uses less digits than its factorization.

404216931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50021.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 404216931 is about 20105.1468783493. The cubic root of 404216931 is about 739.3864716247.

The spelling of 404216931 in words is "four hundred four million, two hundred sixteen thousand, nine hundred thirty-one".