400691430 has 48 divisors (see below), whose sum is σ = 1075411584. Its totient is φ = 103403520.

The previous prime is 400691429. The next prime is 400691449. The reversal of 400691430 is 34196004.

It is a junction number, because it is equal to n+sod(n) for n = 400691394 and 400691403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69019 + ... + 74598.

It is an arithmetic number, because the mean of its divisors is an integer number (22404408).

Almost surely, 2^400691430 is an apocalyptic number.

400691430 is an abundant number, since it is smaller than the sum of its proper divisors (674720154).

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

400691430 is a wasteful number, since it uses less digits than its factorization.

400691430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143661 (or 143658 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 400691430 is about 20017.2782865204. The cubic root of 400691430 is about 737.2305969952.

The spelling of 400691430 in words is "four hundred million, six hundred ninety-one thousand, four hundred thirty".