990919000079 has 2 divisors, whose sum is σ = 990919000080. Its totient is φ = 990919000078.

The previous prime is 990919000063. The next prime is 990919000091. The reversal of 990919000079 is 970000919099.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 990919000079 - 2⁴ = 990919000063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (990919000579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 495459500039 + 495459500040.

It is an arithmetic number, because the mean of its divisors is an integer number (495459500040).

Almost surely, 2^990919000079 is an apocalyptic number.

990919000079 is a deficient number, since it is larger than the sum of its proper divisors (1).

990919000079 is an equidigital number, since it uses as much as digits as its factorization.

990919000079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 413343, while the sum is 53.

The spelling of 990919000079 in words is "nine hundred ninety billion, nine hundred nineteen million, seventy-nine", and thus it is an aban number.