400453431 has 24 divisors (see below), whose sum is σ = 642535920. Its totient is φ = 220937472.

The previous prime is 400453421. The next prime is 400453433. The reversal of 400453431 is 134354004.

It is not a de Polignac number, because 400453431 - 2¹⁰ = 400452407 is a prime.

It is a super-2 number, since 2×400453431² = 320725900799343522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400453433) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42706 + ... + 51231.

It is an arithmetic number, because the mean of its divisors is an integer number (26772330).

Almost surely, 2^400453431 is an apocalyptic number.

400453431 is a deficient number, since it is larger than the sum of its proper divisors (242082489).

400453431 is a wasteful number, since it uses less digits than its factorization.

400453431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93983 (or 93976 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 400453431 is about 20011.3325643246. The cubic root of 400453431 is about 737.0846036093.

The spelling of 400453431 in words is "four hundred million, four hundred fifty-three thousand, four hundred thirty-one".