400457075 has 6 divisors (see below), whose sum is σ = 496566804. Its totient is φ = 320365640.

The previous prime is 400457047. The next prime is 400457077. The reversal of 400457075 is 570754004.

It is not a de Polignac number, because 400457075 - 2⁶ = 400457011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400457077) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8009117 + ... + 8009166.

It is an arithmetic number, because the mean of its divisors is an integer number (82761134).

Almost surely, 2^400457075 is an apocalyptic number.

400457075 is a deficient number, since it is larger than the sum of its proper divisors (96109729).

400457075 is a wasteful number, since it uses less digits than its factorization.

400457075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16018293 (or 16018288 counting only the distinct ones).

The product of its (nonzero) digits is 19600, while the sum is 32.

The square root of 400457075 is about 20011.4236125269. The cubic root of 400457075 is about 737.0868393484.

The spelling of 400457075 in words is "four hundred million, four hundred fifty-seven thousand, seventy-five".