400404808808 has 16 divisors (see below), whose sum is σ = 751930257060. Its totient is φ = 199890073600.

The previous prime is 400404808801. The next prime is 400404808829. The reversal of 400404808808 is 808808404004.

It can be written as a sum of positive squares in 2 ways, for example, as 400306759204 + 98049604 = 632698^2 + 9902^2 .

It is not an unprimeable number, because it can be changed into a prime (400404808801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39035903 + ... + 39046158.

Almost surely, 2^400404808808 is an apocalyptic number.

It is an amenable number.

400404808808 is a deficient number, since it is larger than the sum of its proper divisors (351525448252).

400404808808 is a wasteful number, since it uses less digits than its factorization.

400404808808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78082708 (or 78082704 counting only the distinct ones).

The product of its (nonzero) digits is 262144, while the sum is 44.

The spelling of 400404808808 in words is "four hundred billion, four hundred four million, eight hundred eight thousand, eight hundred eight".