906438404 has 12 divisors (see below), whose sum is σ = 1586479104. Its totient is φ = 453158664.

The previous prime is 906438397. The next prime is 906438431. The reversal of 906438404 is 404834609.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45917 + ... + 62619.

It is an arithmetic number, because the mean of its divisors is an integer number (132206592).

Almost surely, 2^906438404 is an apocalyptic number.

It is an amenable number.

906438404 is a deficient number, since it is larger than the sum of its proper divisors (680040700).

906438404 is a wasteful number, since it uses less digits than its factorization.

906438404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30274 (or 30272 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 38.

The square root of 906438404 is about 30107.1155044783. The cubic root of 906438404 is about 967.7862165349.

The spelling of 906438404 in words is "nine hundred six million, four hundred thirty-eight thousand, four hundred four".