990979330747 has 8 divisors (see below), whose sum is σ = 1146192961536. Its totient is φ = 839176988712.

The previous prime is 990979330699. The next prime is 990979330751. The reversal of 990979330747 is 747033979099.

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 990979330747 - 2²⁷ = 990845113019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (990979334747) 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, 852821563 + ... + 852822724.

It is an arithmetic number, because the mean of its divisors is an integer number (143274120192).

Almost surely, 2^990979330747 is an apocalyptic number.

990979330747 is a deficient number, since it is larger than the sum of its proper divisors (155213630789).

990979330747 is a wasteful number, since it uses less digits than its factorization.

990979330747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1705644377.

The product of its (nonzero) digits is 81015228, while the sum is 67.

The spelling of 990979330747 in words is "nine hundred ninety billion, nine hundred seventy-nine million, three hundred thirty thousand, seven hundred forty-seven".