400437478402 has 32 divisors (see below), whose sum is σ = 680955508800. Its totient is φ = 175077298368.

The previous prime is 400437478391. The next prime is 400437478411. The reversal of 400437478402 is 204874734004.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10646193 + ... + 10683739.

It is an arithmetic number, because the mean of its divisors is an integer number (21279859650).

Almost surely, 2^400437478402 is an apocalyptic number.

400437478402 is a deficient number, since it is larger than the sum of its proper divisors (280518030398).

400437478402 is a wasteful number, since it uses less digits than its factorization.

400437478402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59170.

The product of its (nonzero) digits is 602112, while the sum is 43.

The spelling of 400437478402 in words is "four hundred billion, four hundred thirty-seven million, four hundred seventy-eight thousand, four hundred two".