99510913 has 2 divisors, whose sum is σ = 99510914. Its totient is φ = 99510912.

The previous prime is 99510893. The next prime is 99510953. The reversal of 99510913 is 31901599.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66471409 + 33039504 = 8153^2 + 5748^2 .

It is an emirp because it is prime and its reverse (31901599) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99510913 - 2²¹ = 97413761 is a prime.

It is not a weakly prime, because it can be changed into another prime (99510953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49755456 + 49755457.

It is an arithmetic number, because the mean of its divisors is an integer number (49755457).

Almost surely, 2^99510913 is an apocalyptic number.

It is an amenable number.

99510913 is a deficient number, since it is larger than the sum of its proper divisors (1).

99510913 is an equidigital number, since it uses as much as digits as its factorization.

99510913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10935, while the sum is 37.

The square root of 99510913 is about 9975.5156758937. The cubic root of 99510913 is about 463.4009327497.

The spelling of 99510913 in words is "ninety-nine million, five hundred ten thousand, nine hundred thirteen".