400044043700 has 72 divisors (see below), whose sum is σ = 999921334272. Its totient is φ = 136077943680.

The previous prime is 400044043699. The next prime is 400044043723. The reversal of 400044043700 is 7340440004.

It is a self number, because there is not a number n which added to its sum of digits gives 400044043700.

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, 2161067 + ... + 2338866.

Almost surely, 2^400044043700 is an apocalyptic number.

It is an amenable number.

400044043700 is an abundant number, since it is smaller than the sum of its proper divisors (599877290572).

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

400044043700 is a wasteful number, since it uses less digits than its factorization.

400044043700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4500081 (or 4500074 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 26.

Adding to 400044043700 its reverse (7340440004), we get a palindrome (407384483704).

The spelling of 400044043700 in words is "four hundred billion, forty-four million, forty-three thousand, seven hundred".