404680944 has 80 divisors (see below), whose sum is σ = 1084089344. Its totient is φ = 130080960.

The previous prime is 404680933. The next prime is 404680963. The reversal of 404680944 is 449086404.

It is a super-2 number, since 2×404680944² = 327533332873462272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1429827 + ... + 1430109.

Almost surely, 2^404680944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 404680944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (542044672).

404680944 is an abundant number, since it is smaller than the sum of its proper divisors (679408400).

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

404680944 is an equidigital number, since it uses as much as digits as its factorization.

404680944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387 (or 319 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 39.

The square root of 404680944 is about 20116.6832256215. The cubic root of 404680944 is about 739.6692848973.

The spelling of 404680944 in words is "four hundred four million, six hundred eighty thousand, nine hundred forty-four".