406380808 has 16 divisors (see below), whose sum is σ = 762294060. Its totient is φ = 203102400.

The previous prime is 406380803. The next prime is 406380809. The reversal of 406380808 is 808083604.

It can be written as a sum of positive squares in 2 ways, for example, as 365650884 + 40729924 = 19122^2 + 6382^2 .

It is a super-2 number, since 2×406380808² = 330290722221465728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (406380803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11278 + ... + 30658.

Almost surely, 2^406380808 is an apocalyptic number.

It is an amenable number.

406380808 is a deficient number, since it is larger than the sum of its proper divisors (355913252).

406380808 is a wasteful number, since it uses less digits than its factorization.

406380808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22008 (or 22004 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 406380808 is about 20158.8890566916. The cubic root of 406380808 is about 740.7034994815.

The spelling of 406380808 in words is "four hundred six million, three hundred eighty thousand, eight hundred eight".