99099977 has 2 divisors, whose sum is σ = 99099978. Its totient is φ = 99099976.

The previous prime is 99099967. The next prime is 99100007. The reversal of 99099977 is 77999099.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50922496 + 48177481 = 7136^2 + 6941^2 .

It is a cyclic number.

It is not a de Polignac number, because 99099977 - 2⁴ = 99099961 is a prime.

It is not a weakly prime, because it can be changed into another prime (99099947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49549988 + 49549989.

It is an arithmetic number, because the mean of its divisors is an integer number (49549989).

Almost surely, 2^99099977 is an apocalyptic number.

It is an amenable number.

99099977 is a deficient number, since it is larger than the sum of its proper divisors (1).

99099977 is an equidigital number, since it uses as much as digits as its factorization.

99099977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2893401, while the sum is 59.

The square root of 99099977 is about 9954.8971365856. The cubic root of 99099977 is about 462.7621724673.

The spelling of 99099977 in words is "ninety-nine million, ninety-nine thousand, nine hundred seventy-seven".