400687034 has 16 divisors (see below), whose sum is σ = 656379936. Its totient is φ = 181933200.

The previous prime is 400687031. The next prime is 400687037. The reversal of 400687034 is 430786004.

400687034 = 93² + 94² + ... + 1063².

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (400687031) and next prime (400687037).

It is not an unprimeable number, because it can be changed into a prime (400687031) 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, 11984 + ... + 30740.

It is an arithmetic number, because the mean of its divisors is an integer number (41023746).

Almost surely, 2^400687034 is an apocalyptic number.

400687034 is a deficient number, since it is larger than the sum of its proper divisors (255692902).

400687034 is a wasteful number, since it uses less digits than its factorization.

400687034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19741.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 400687034 is about 20017.1684810814. The cubic root of 400687034 is about 737.2279009243.

The spelling of 400687034 in words is "four hundred million, six hundred eighty-seven thousand, thirty-four".