400936090 has 16 divisors (see below), whose sum is σ = 722297088. Its totient is φ = 160238416.

The previous prime is 400936087. The next prime is 400936127. The reversal of 400936090 is 90639004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4162 + ... + 28621.

It is an arithmetic number, because the mean of its divisors is an integer number (45143568).

Almost surely, 2^400936090 is an apocalyptic number.

400936090 is a deficient number, since it is larger than the sum of its proper divisors (321360998).

400936090 is a wasteful number, since it uses less digits than its factorization.

400936090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34013.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 400936090 is about 20023.3885743647. The cubic root of 400936090 is about 737.3806161252.

The spelling of 400936090 in words is "four hundred million, nine hundred thirty-six thousand, ninety".