404266161 has 16 divisors (see below), whose sum is σ = 580845440. Its totient is φ = 248624640.

The previous prime is 404266157. The next prime is 404266169. The reversal of 404266161 is 161662404.

It is not a de Polignac number, because 404266161 - 2² = 404266157 is a prime.

It is a super-2 number, since 2×404266161² = 326862257859355842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (404266169) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121956 + ... + 125226.

It is an arithmetic number, because the mean of its divisors is an integer number (36302840).

Almost surely, 2^404266161 is an apocalyptic number.

It is an amenable number.

404266161 is a deficient number, since it is larger than the sum of its proper divisors (176579279).

404266161 is a wasteful number, since it uses less digits than its factorization.

404266161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6456.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 404266161 is about 20106.3711544376. The cubic root of 404266161 is about 739.4164872884.

The spelling of 404266161 in words is "four hundred four million, two hundred sixty-six thousand, one hundred sixty-one".