404687376 has 30 divisors (see below), whose sum is σ = 1132562990. Its totient is φ = 134895744.

The previous prime is 404687357. The next prime is 404687377. The reversal of 404687376 is 673786404.

It can be written as a sum of positive squares in only one way, i.e., 392990976 + 11696400 = 19824^2 + 3420^2 .

It is not an unprimeable number, because it can be changed into a prime (404687377) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1405021 + ... + 1405308.

Almost surely, 2^404687376 is an apocalyptic number.

It is an amenable number.

404687376 is an abundant number, since it is smaller than the sum of its proper divisors (727875614).

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

404687376 is a wasteful number, since it uses less digits than its factorization.

404687376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2810343 (or 2810334 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 45.

The square root of 404687376 is about 20116.8430922946. The cubic root of 404687376 is about 739.6732036451.

Subtracting from 404687376 its product of nonzero digits (677376), we obtain a square (404010000 = 20100²).

The spelling of 404687376 in words is "four hundred four million, six hundred eighty-seven thousand, three hundred seventy-six".