990079305 has 8 divisors (see below), whose sum is σ = 1584126912. Its totient is φ = 528042288.

The previous prime is 990079297. The next prime is 990079319. The reversal of 990079305 is 503970099.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 990079305 - 2³ = 990079297 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33002629 + ... + 33002658.

It is an arithmetic number, because the mean of its divisors is an integer number (198015864).

Almost surely, 2^990079305 is an apocalyptic number.

It is an amenable number.

990079305 is a deficient number, since it is larger than the sum of its proper divisors (594047607).

990079305 is a wasteful number, since it uses less digits than its factorization.

990079305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66005295.

The product of its (nonzero) digits is 76545, while the sum is 42.

The square root of 990079305 is about 31465.5256590447. The cubic root of 990079305 is about 996.6821054171.

The spelling of 990079305 in words is "nine hundred ninety million, seventy-nine thousand, three hundred five".