400770976 has 96 divisors (see below), whose sum is σ = 854945280. Its totient is φ = 184550400.

The previous prime is 400770943. The next prime is 400770977. The reversal of 400770976 is 679077004.

It is a happy number.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (400770977) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2238855 + ... + 2239033.

It is an arithmetic number, because the mean of its divisors is an integer number (8905680).

Almost surely, 2^400770976 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 400770976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (427472640).

400770976 is an abundant number, since it is smaller than the sum of its proper divisors (454174304).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400770976 is a wasteful number, since it uses less digits than its factorization.

400770976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318 (or 310 counting only the distinct ones).

The product of its (nonzero) digits is 74088, while the sum is 40.

The square root of 400770976 is about 20019.2651213775. The cubic root of 400770976 is about 737.2793792255.

The spelling of 400770976 in words is "four hundred million, seven hundred seventy thousand, nine hundred seventy-six".