99590081 has 2 divisors, whose sum is σ = 99590082. Its totient is φ = 99590080.

The previous prime is 99590059. The next prime is 99590083. The reversal of 99590081 is 18009599.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52200625 + 47389456 = 7225^2 + 6884^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99590081 is a prime.

It is a super-2 number, since 2×99590081² = 19836368467173122, which contains 22 as substring.

Together with 99590083, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (99590083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49795040 + 49795041.

It is an arithmetic number, because the mean of its divisors is an integer number (49795041).

Almost surely, 2^99590081 is an apocalyptic number.

It is an amenable number.

99590081 is a deficient number, since it is larger than the sum of its proper divisors (1).

99590081 is an equidigital number, since it uses as much as digits as its factorization.

99590081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29160, while the sum is 41.

The square root of 99590081 is about 9979.4830026410. The cubic root of 99590081 is about 463.5237896282.

The spelling of 99590081 in words is "ninety-nine million, five hundred ninety thousand, eighty-one".