9115899 has 16 divisors (see below), whose sum is σ = 13411104. Its totient is φ = 5472000.

The previous prime is 9115879. The next prime is 9115907. The reversal of 9115899 is 9985119.

It is not a de Polignac number, because 9115899 - 2¹¹ = 9113851 is a prime.

It is a super-2 number, since 2×9115899² = 166199229156402, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 9115899.

It is not an unprimeable number, because it can be changed into a prime (9115879) 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 in 15 ways as a sum of consecutive naturals, for example, 1252 + ... + 4449.

It is an arithmetic number, because the mean of its divisors is an integer number (838194).

Almost surely, 2^9115899 is an apocalyptic number.

9115899 is a deficient number, since it is larger than the sum of its proper divisors (4295205).

9115899 is a wasteful number, since it uses less digits than its factorization.

9115899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5758.

The product of its digits is 29160, while the sum is 42.

The square root of 9115899 is about 3019.2547093612. The cubic root of 9115899 is about 208.8974642603.

The spelling of 9115899 in words is "nine million, one hundred fifteen thousand, eight hundred ninety-nine".