404639274 has 16 divisors (see below), whose sum is σ = 871530912. Its totient is φ = 124504368.

The previous prime is 404639269. The next prime is 404639281. The reversal of 404639274 is 472936404.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2593764 + ... + 2593919.

It is an arithmetic number, because the mean of its divisors is an integer number (54470682).

Almost surely, 2^404639274 is an apocalyptic number.

404639274 is an abundant number, since it is smaller than the sum of its proper divisors (466891638).

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

404639274 is a wasteful number, since it uses less digits than its factorization.

404639274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5187701.

The product of its (nonzero) digits is 145152, while the sum is 39.

The square root of 404639274 is about 20115.6474914431. The cubic root of 404639274 is about 739.6438961085.

The spelling of 404639274 in words is "four hundred four million, six hundred thirty-nine thousand, two hundred seventy-four".