99395295977 has 2 divisors, whose sum is σ = 99395295978. Its totient is φ = 99395295976.

The previous prime is 99395295931. The next prime is 99395295991. The reversal of 99395295977 is 77959259399.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97184321536 + 2210974441 = 311744^2 + 47021^2 .

It is a cyclic number.

It is not a de Polignac number, because 99395295977 - 2²⁴ = 99378518761 is a prime.

It is not a weakly prime, because it can be changed into another prime (99395295907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49697647988 + 49697647989.

It is an arithmetic number, because the mean of its divisors is an integer number (49697647989).

Almost surely, 2^99395295977 is an apocalyptic number.

It is an amenable number.

99395295977 is a deficient number, since it is larger than the sum of its proper divisors (1).

99395295977 is an equidigital number, since it uses as much as digits as its factorization.

99395295977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 434010150, while the sum is 74.

The spelling of 99395295977 in words is "ninety-nine billion, three hundred ninety-five million, two hundred ninety-five thousand, nine hundred seventy-seven".