99910089997 has 2 divisors, whose sum is σ = 99910089998. Its totient is φ = 99910089996.

The previous prime is 99910089973. The next prime is 99910090019. The reversal of 99910089997 is 79998001999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71710948521 + 28199141476 = 267789^2 + 167926^2 .

It is an emirp because it is prime and its reverse (79998001999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99910089997 - 2⁷ = 99910089869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99914089997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49955044998 + 49955044999.

It is an arithmetic number, because the mean of its divisors is an integer number (49955044999).

Almost surely, 2^99910089997 is an apocalyptic number.

It is an amenable number.

99910089997 is a deficient number, since it is larger than the sum of its proper divisors (1).

99910089997 is an equidigital number, since it uses as much as digits as its factorization.

99910089997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29760696, while the sum is 70.

The spelling of 99910089997 in words is "ninety-nine billion, nine hundred ten million, eighty-nine thousand, nine hundred ninety-seven".