400287934 has 32 divisors (see below), whose sum is σ = 654888960. Its totient is φ = 182800800.

The previous prime is 400287907. The next prime is 400287977. The reversal of 400287934 is 439782004.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 400287893 and 400287902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 438939 + ... + 439849.

It is an arithmetic number, because the mean of its divisors is an integer number (20465280).

Almost surely, 2^400287934 is an apocalyptic number.

400287934 is a deficient number, since it is larger than the sum of its proper divisors (254601026).

400287934 is a wasteful number, since it uses less digits than its factorization.

400287934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1336.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 400287934 is about 20007.1970550600. The cubic root of 400287934 is about 736.9830503120.

The spelling of 400287934 in words is "four hundred million, two hundred eighty-seven thousand, nine hundred thirty-four".