99976607639 has 2 divisors, whose sum is σ = 99976607640. Its totient is φ = 99976607638.

The previous prime is 99976607593. The next prime is 99976607651. The reversal of 99976607639 is 93670667999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99976607639 - 2²⁴ = 99959830423 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99976600639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49988303819 + 49988303820.

It is an arithmetic number, because the mean of its divisors is an integer number (49988303820).

Almost surely, 2^99976607639 is an apocalyptic number.

99976607639 is a deficient number, since it is larger than the sum of its proper divisors (1).

99976607639 is an equidigital number, since it uses as much as digits as its factorization.

99976607639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 208324872, while the sum is 71.

The spelling of 99976607639 in words is "ninety-nine billion, nine hundred seventy-six million, six hundred seven thousand, six hundred thirty-nine".