400364642 has 16 divisors (see below), whose sum is σ = 617369280. Its totient is φ = 194585328.

The previous prime is 400364621. The next prime is 400364663. The reversal of 400364642 is 246463004.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (400364621) and next prime (400364663).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105209 + ... + 108947.

It is an arithmetic number, because the mean of its divisors is an integer number (38585580).

Almost surely, 2^400364642 is an apocalyptic number.

400364642 is a deficient number, since it is larger than the sum of its proper divisors (217004638).

400364642 is a wasteful number, since it uses less digits than its factorization.

400364642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5225.

The product of its (nonzero) digits is 13824, while the sum is 29.

The square root of 400364642 is about 20009.1139733872. The cubic root of 400364642 is about 737.0301238311.

The spelling of 400364642 in words is "four hundred million, three hundred sixty-four thousand, six hundred forty-two".