99938977 has 2 divisors, whose sum is σ = 99938978. Its totient is φ = 99938976.

The previous prime is 99938953. The next prime is 99938981. The reversal of 99938977 is 77983999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66194496 + 33744481 = 8136^2 + 5809^2 .

It is a cyclic number.

It is not a de Polignac number, because 99938977 - 2²³ = 91550369 is a prime.

It is not a weakly prime, because it can be changed into another prime (99938177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49969488 + 49969489.

It is an arithmetic number, because the mean of its divisors is an integer number (49969489).

Almost surely, 2^99938977 is an apocalyptic number.

It is an amenable number.

99938977 is a deficient number, since it is larger than the sum of its proper divisors (1).

99938977 is an equidigital number, since it uses as much as digits as its factorization.

99938977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7715736, while the sum is 61.

The square root of 99938977 is about 9996.9483843821. The cubic root of 99938977 is about 464.0644495914.

The spelling of 99938977 in words is "ninety-nine million, nine hundred thirty-eight thousand, nine hundred seventy-seven".