990456995 has 16 divisors (see below), whose sum is σ = 1307322720. Its totient is φ = 720327520.

The previous prime is 990456977. The next prime is 990457001. The reversal of 990456995 is 599654099.

990456995 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 990456995 - 2¹² = 990452899 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 990456995.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67760 + ... + 81069.

It is an arithmetic number, because the mean of its divisors is an integer number (81707670).

Almost surely, 2^990456995 is an apocalyptic number.

990456995 is a deficient number, since it is larger than the sum of its proper divisors (316865725).

990456995 is a wasteful number, since it uses less digits than its factorization.

990456995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148867 (or 148845 counting only the distinct ones).

The product of its (nonzero) digits is 3936600, while the sum is 56.

The square root of 990456995 is about 31471.5267344945. The cubic root of 990456995 is about 996.8088255716.

The spelling of 990456995 in words is "nine hundred ninety million, four hundred fifty-six thousand, nine hundred ninety-five".