99397698139 has 2 divisors, whose sum is σ = 99397698140. Its totient is φ = 99397698138.

The previous prime is 99397698079. The next prime is 99397698161. The reversal of 99397698139 is 93189679399.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99397698139 - 2⁹ = 99397697627 is a prime.

It is not a weakly prime, because it can be changed into another prime (99397698199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49698849069 + 49698849070.

It is an arithmetic number, because the mean of its divisors is an integer number (49698849070).

Almost surely, 2^99397698139 is an apocalyptic number.

99397698139 is a deficient number, since it is larger than the sum of its proper divisors (1).

99397698139 is an equidigital number, since it uses as much as digits as its factorization.

99397698139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 178564176, while the sum is 73.

The spelling of 99397698139 in words is "ninety-nine billion, three hundred ninety-seven million, six hundred ninety-eight thousand, one hundred thirty-nine".