400871738 has 16 divisors (see below), whose sum is σ = 627915456. Its totient is φ = 191579520.

The previous prime is 400871707. The next prime is 400871743. The reversal of 400871738 is 837178004.

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, 86570 + ... + 91082.

It is an arithmetic number, because the mean of its divisors is an integer number (39244716).

Almost surely, 2^400871738 is an apocalyptic number.

400871738 is a deficient number, since it is larger than the sum of its proper divisors (227043718).

400871738 is a wasteful number, since it uses less digits than its factorization.

400871738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6469.

The product of its (nonzero) digits is 37632, while the sum is 38.

The square root of 400871738 is about 20021.7815890595. The cubic root of 400871738 is about 737.3411630739.

The spelling of 400871738 in words is "four hundred million, eight hundred seventy-one thousand, seven hundred thirty-eight".