990116399908 has 12 divisors (see below), whose sum is σ = 1732739320732. Its totient is φ = 495048022560.

The previous prime is 990116399903. The next prime is 990116399929. The reversal of 990116399908 is 809993611099.

It can be written as a sum of positive squares in 2 ways, for example, as 782743633984 + 207372765924 = 884728^2 + 455382^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 990116399908.

It is not an unprimeable number, because it can be changed into a prime (990116399903) 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, 2323323 + ... + 2716258.

Almost surely, 2^990116399908 is an apocalyptic number.

It is an amenable number.

990116399908 is a deficient number, since it is larger than the sum of its proper divisors (742622920824).

990116399908 is a wasteful number, since it uses less digits than its factorization.

990116399908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5088702 (or 5088700 counting only the distinct ones).

The product of its (nonzero) digits is 8503056, while the sum is 64.

The spelling of 990116399908 in words is "nine hundred ninety billion, one hundred sixteen million, three hundred ninety-nine thousand, nine hundred eight".