400444846600 has 48 divisors (see below), whose sum is σ = 931521846420. Its totient is φ = 160094054400.

The previous prime is 400444846591. The next prime is 400444846601. The reversal of 400444846600 is 6648444004.

It can be written as a sum of positive squares in 6 ways, for example, as 338814798084 + 61630048516 = 582078^2 + 248254^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (400444846601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 140721 + ... + 905920.

Almost surely, 2^400444846600 is an apocalyptic number.

400444846600 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400444846600 is an abundant number, since it is smaller than the sum of its proper divisors (531076999820).

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

400444846600 is a wasteful number, since it uses less digits than its factorization.

400444846600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1048570 (or 1048561 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 40.

The spelling of 400444846600 in words is "four hundred billion, four hundred forty-four million, eight hundred forty-six thousand, six hundred".