99115519 has 4 divisors (see below), whose sum is σ = 99432496. Its totient is φ = 98798544.

The previous prime is 99115501. The next prime is 99115543. The reversal of 99115519 is 91551199.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 99115519 - 2¹⁵ = 99082751 is a prime.

It is a super-2 number, since 2×99115519² = 19647772213278722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99115019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158019 + ... + 158644.

It is an arithmetic number, because the mean of its divisors is an integer number (24858124).

Almost surely, 2^99115519 is an apocalyptic number.

99115519 is a deficient number, since it is larger than the sum of its proper divisors (316977).

99115519 is a wasteful number, since it uses less digits than its factorization.

99115519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316976.

The product of its digits is 18225, while the sum is 40.

The square root of 99115519 is about 9955.6777268049. The cubic root of 99115519 is about 462.7863631010.

The spelling of 99115519 in words is "ninety-nine million, one hundred fifteen thousand, five hundred nineteen".