99717254939 has 2 divisors, whose sum is σ = 99717254940. Its totient is φ = 99717254938.

The previous prime is 99717254921. The next prime is 99717254953. The reversal of 99717254939 is 93945271799.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99717254939 is a prime.

It is not a weakly prime, because it can be changed into another prime (99717254969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49858627469 + 49858627470.

It is an arithmetic number, because the mean of its divisors is an integer number (49858627470).

Almost surely, 2^99717254939 is an apocalyptic number.

99717254939 is a deficient number, since it is larger than the sum of its proper divisors (1).

99717254939 is an equidigital number, since it uses as much as digits as its factorization.

99717254939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38578680, while the sum is 65.

The spelling of 99717254939 in words is "ninety-nine billion, seven hundred seventeen million, two hundred fifty-four thousand, nine hundred thirty-nine".