400392942 has 16 divisors (see below), whose sum is σ = 847891152. Its totient is φ = 125613440.

The previous prime is 400392929. The next prime is 400392943. The reversal of 400392942 is 249293004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400392943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1962609 + ... + 1962812.

It is an arithmetic number, because the mean of its divisors is an integer number (52993197).

Almost surely, 2^400392942 is an apocalyptic number.

400392942 is an abundant number, since it is smaller than the sum of its proper divisors (447498210).

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

400392942 is a wasteful number, since it uses less digits than its factorization.

400392942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3925443.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 400392942 is about 20009.8211386309. The cubic root of 400392942 is about 737.0474892183.

The spelling of 400392942 in words is "four hundred million, three hundred ninety-two thousand, nine hundred forty-two".