400152969 has 12 divisors (see below), whose sum is σ = 591441136. Its totient is φ = 260564472.

The previous prime is 400152959. The next prime is 400153009. The reversal of 400152969 is 969251004.

It is not a de Polignac number, because 400152969 - 2⁸ = 400152713 is a prime.

It is a super-2 number, since 2×400152969² = 320244797199029922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (400152959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 516607 + ... + 517380.

Almost surely, 2^400152969 is an apocalyptic number.

It is an amenable number.

400152969 is a deficient number, since it is larger than the sum of its proper divisors (191288167).

400152969 is a wasteful number, since it uses less digits than its factorization.

400152969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1034036 (or 1034033 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 400152969 is about 20003.8238594525. The cubic root of 400152969 is about 736.9002115268.

The spelling of 400152969 in words is "four hundred million, one hundred fifty-two thousand, nine hundred sixty-nine".