404912916 has 36 divisors (see below), whose sum is σ = 1024156224. Its totient is φ = 134888400.

The previous prime is 404912909. The next prime is 404912923. The reversal of 404912916 is 619219404.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (404912909) and next prime (404912923).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94051 + ... + 98261.

It is an arithmetic number, because the mean of its divisors is an integer number (28448784).

Almost surely, 2^404912916 is an apocalyptic number.

It is an amenable number.

404912916 is an abundant number, since it is smaller than the sum of its proper divisors (619243308).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

404912916 is a wasteful number, since it uses less digits than its factorization.

404912916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6892 (or 6887 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 404912916 is about 20122.4480618040. The cubic root of 404912916 is about 739.8105894578.

The spelling of 404912916 in words is "four hundred four million, nine hundred twelve thousand, nine hundred sixteen".