406855173904 has 15 divisors (see below), whose sum is σ = 788286842823. Its totient is φ = 203426311248.

The previous prime is 406855173883. The next prime is 406855173911. The reversal of 406855173904 is 409371558604.

The square root of 406855173904 is 637852.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×406855173904² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2471677 + ... + 2631139.

Almost surely, 2^406855173904 is an apocalyptic number.

406855173904 is the 637852-nd square number.

It is an amenable number.

406855173904 is a deficient number, since it is larger than the sum of its proper divisors (381431668919).

406855173904 is an frugal number, since it uses more digits than its factorization.

406855173904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318934 (or 159465 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 52.

The spelling of 406855173904 in words is "four hundred six billion, eight hundred fifty-five million, one hundred seventy-three thousand, nine hundred four".