400585808 has 40 divisors (see below), whose sum is σ = 893520192. Its totient is φ = 170419968.

The previous prime is 400585789. The next prime is 400585837. The reversal of 400585808 is 808585004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2291 + ... + 28397.

Almost surely, 2^400585808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 400585808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (446760096).

400585808 is an abundant number, since it is smaller than the sum of its proper divisors (492934384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400585808 is a wasteful number, since it uses less digits than its factorization.

400585808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26259 (or 26253 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 38.

The square root of 400585808 is about 20014.6398418757. The cubic root of 400585808 is about 737.1658134675.

The spelling of 400585808 in words is "four hundred million, five hundred eighty-five thousand, eight hundred eight".