400406770 has 64 divisors (see below), whose sum is σ = 784753920. Its totient is φ = 146637568.

The previous prime is 400406767. The next prime is 400406789. The reversal of 400406770 is 77604004.

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 31 ways as a sum of consecutive naturals, for example, 1153737 + ... + 1154083.

It is an arithmetic number, because the mean of its divisors is an integer number (12261780).

Almost surely, 2^400406770 is an apocalyptic number.

400406770 is a deficient number, since it is larger than the sum of its proper divisors (384347150).

400406770 is a wasteful number, since it uses less digits than its factorization.

400406770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579.

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 400406770 is about 20010.1666659726. The cubic root of 400406770 is about 737.0559740293.

The spelling of 400406770 in words is "four hundred million, four hundred six thousand, seven hundred seventy".