400770975 has 48 divisors (see below), whose sum is σ = 754308864. Its totient is φ = 185856000.

The previous prime is 400770943. The next prime is 400770977. The reversal of 400770975 is 579077004.

It is not a de Polignac number, because 400770975 - 2⁵ = 400770943 is a prime.

It is a congruent number.

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

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 47 ways as a sum of consecutive naturals, for example, 8415 + ... + 29535.

It is an arithmetic number, because the mean of its divisors is an integer number (15714768).

Almost surely, 2^400770975 is an apocalyptic number.

400770975 is a deficient number, since it is larger than the sum of its proper divisors (353537889).

400770975 is a wasteful number, since it uses less digits than its factorization.

400770975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21168 (or 21163 counting only the distinct ones).

The product of its (nonzero) digits is 61740, while the sum is 39.

The square root of 400770975 is about 20019.2650964015. The cubic root of 400770975 is about 737.2793786123.

The spelling of 400770975 in words is "four hundred million, seven hundred seventy thousand, nine hundred seventy-five".