400860420 has 48 divisors (see below), whose sum is σ = 1123362240. Its totient is φ = 106805376.

The previous prime is 400860419. The next prime is 400860431. The reversal of 400860420 is 24068004.

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 15 ways as a sum of consecutive naturals, for example, 98139 + ... + 102141.

It is an arithmetic number, because the mean of its divisors is an integer number (23403380).

Almost surely, 2^400860420 is an apocalyptic number.

It is an amenable number.

400860420 is an abundant number, since it is smaller than the sum of its proper divisors (722501820).

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

400860420 is a wasteful number, since it uses less digits than its factorization.

400860420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5684 (or 5682 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 400860420 is about 20021.4989448842. The cubic root of 400860420 is about 737.3342237755.

The spelling of 400860420 in words is "four hundred million, eight hundred sixty thousand, four hundred twenty".