990079 has 8 divisors (see below), whose sum is σ = 1023120. Its totient is φ = 957696.

The previous prime is 990053. The next prime is 990137. The reversal of 990079 is 970099.

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

It is a cyclic number.

It is not a de Polignac number, because 990079 - 2⁷ = 989951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990179) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5637 + ... + 5809.

It is an arithmetic number, because the mean of its divisors is an integer number (127890).

2⁹⁹⁰⁰⁷⁹ is an apocalyptic number.

990079 is a deficient number, since it is larger than the sum of its proper divisors (33041).

990079 is a wasteful number, since it uses less digits than its factorization.

990079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329.

The product of its (nonzero) digits is 5103, while the sum is 34.

The square root of 990079 is about 995.0271353084. The cubic root of 990079 is about 99.6682003072.

The spelling of 990079 in words is "nine hundred ninety thousand, seventy-nine".