400469400 has 96 divisors (see below), whose sum is σ = 1379413200. Its totient is φ = 106790400.

The previous prime is 400469359. The next prime is 400469411. The reversal of 400469400 is 4964004.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 31681 + ... + 42480.

Almost surely, 2^400469400 is an apocalyptic number.

400469400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400469400 is an abundant number, since it is smaller than the sum of its proper divisors (978943800).

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

400469400 is a wasteful number, since it uses less digits than its factorization.

400469400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74186 (or 74171 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 400469400 is about 20011.7315592629. The cubic root of 400469400 is about 737.0944011260.

The spelling of 400469400 in words is "four hundred million, four hundred sixty-nine thousand, four hundred".