99515009 has 4 divisors (see below), whose sum is σ = 108561840. Its totient is φ = 90468180.

The previous prime is 99514993. The next prime is 99515023. The reversal of 99515009 is 90051599.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 99515009 - 2⁴ = 99514993 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (99715009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4523399 + ... + 4523420.

It is an arithmetic number, because the mean of its divisors is an integer number (27140460).

Almost surely, 2^99515009 is an apocalyptic number.

It is an amenable number.

99515009 is a deficient number, since it is larger than the sum of its proper divisors (9046831).

99515009 is a wasteful number, since it uses less digits than its factorization.

99515009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9046830.

The product of its (nonzero) digits is 18225, while the sum is 38.

The square root of 99515009 is about 9975.7209764508. The cubic root of 99515009 is about 463.4072907263.

The spelling of 99515009 in words is "ninety-nine million, five hundred fifteen thousand, nine".