400406442204 has 48 divisors (see below), whose sum is σ = 977696294400. Its totient is φ = 127299986880.

The previous prime is 400406442179. The next prime is 400406442209. The reversal of 400406442204 is 402244604004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400406442209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1982112 + ... + 2174759.

It is an arithmetic number, because the mean of its divisors is an integer number (20368672800).

Almost surely, 2^400406442204 is an apocalyptic number.

It is an amenable number.

400406442204 is an abundant number, since it is smaller than the sum of its proper divisors (577289852196).

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

400406442204 is a wasteful number, since it uses less digits than its factorization.

400406442204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4157250 (or 4157248 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 30.

The spelling of 400406442204 in words is "four hundred billion, four hundred six million, four hundred forty-two thousand, two hundred four".