99175009 has 2 divisors, whose sum is σ = 99175010. Its totient is φ = 99175008.

The previous prime is 99174973. The next prime is 99175019. The reversal of 99175009 is 90057199.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87478609 + 11696400 = 9353^2 + 3420^2 .

It is a cyclic number.

It is not a de Polignac number, because 99175009 - 2²³ = 90786401 is a prime.

It is not a weakly prime, because it can be changed into another prime (99175019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49587504 + 49587505.

It is an arithmetic number, because the mean of its divisors is an integer number (49587505).

Almost surely, 2^99175009 is an apocalyptic number.

It is an amenable number.

99175009 is a deficient number, since it is larger than the sum of its proper divisors (1).

99175009 is an equidigital number, since it uses as much as digits as its factorization.

99175009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25515, while the sum is 40.

The square root of 99175009 is about 9958.6650209755. The cubic root of 99175009 is about 462.8789340549.

The spelling of 99175009 in words is "ninety-nine million, one hundred seventy-five thousand, nine".