404430916 has 12 divisors (see below), whose sum is σ = 721108332. Its totient is φ = 198399968.

The previous prime is 404430907. The next prime is 404430947. The reversal of 404430916 is 619034404.

It can be written as a sum of positive squares in 2 ways, for example, as 282240000 + 122190916 = 16800^2 + 11054^2 .

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, 953635 + ... + 954058.

It is an arithmetic number, because the mean of its divisors is an integer number (60092361).

Almost surely, 2^404430916 is an apocalyptic number.

It is an amenable number.

404430916 is a deficient number, since it is larger than the sum of its proper divisors (316677416).

404430916 is a wasteful number, since it uses less digits than its factorization.

404430916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1907750 (or 1907748 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 404430916 is about 20110.4678215103. The cubic root of 404430916 is about 739.5169211359.

The spelling of 404430916 in words is "four hundred four million, four hundred thirty thousand, nine hundred sixteen".