404774161 has 27 divisors (see below), whose sum is σ = 467656329. Its totient is φ = 350070600.

The previous prime is 404774147. The next prime is 404774177. The reversal of 404774161 is 161477404.

The square root of 404774161 is 20119.

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

It is not a de Polignac number, because 404774161 - 2⁵ = 404774129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (404774261) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 6860550 + ... + 6860608.

Almost surely, 2^404774161 is an apocalyptic number.

404774161 is the 20119-th square number.

404774161 is the 10060-th centered octagonal number.

It is an amenable number.

404774161 is a deficient number, since it is larger than the sum of its proper divisors (62882168).

404774161 is an equidigital number, since it uses as much as digits as its factorization.

404774161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202 (or 101 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 34.

The cubic root of 404774161 is about 739.7260740455.

The spelling of 404774161 in words is "four hundred four million, seven hundred seventy-four thousand, one hundred sixty-one".