400357086 has 32 divisors (see below), whose sum is σ = 815013888. Its totient is φ = 131090400.

The previous prime is 400357081. The next prime is 400357099. The reversal of 400357086 is 680753004.

It is a super-2 number, since 2×400357086² = 320571592620822792, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400357081) 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, 75936 + ... + 81036.

It is an arithmetic number, because the mean of its divisors is an integer number (25469184).

Almost surely, 2^400357086 is an apocalyptic number.

400357086 is an abundant number, since it is smaller than the sum of its proper divisors (414656802).

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

400357086 is a wasteful number, since it uses less digits than its factorization.

400357086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5336.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 400357086 is about 20008.9251585386. The cubic root of 400357086 is about 737.0254871957.

The spelling of 400357086 in words is "four hundred million, three hundred fifty-seven thousand, eighty-six".