99515389 has 4 divisors (see below), whose sum is σ = 99718560. Its totient is φ = 99312220.

The previous prime is 99515387. The next prime is 99515417. The reversal of 99515389 is 98351599.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 98351599 = 181 ⋅543379.

It is a cyclic number.

It is not a de Polignac number, because 99515389 - 2¹ = 99515387 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99515387) 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, 100849 + ... + 101830.

It is an arithmetic number, because the mean of its divisors is an integer number (24929640).

Almost surely, 2^99515389 is an apocalyptic number.

It is an amenable number.

99515389 is a deficient number, since it is larger than the sum of its proper divisors (203171).

99515389 is a wasteful number, since it uses less digits than its factorization.

99515389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203170.

The product of its digits is 437400, while the sum is 49.

The square root of 99515389 is about 9975.7400226750. The cubic root of 99515389 is about 463.4078805689.

It can be divided in two parts, 995 and 15389, that added together give a 14-th power (16384 = 2¹⁴).

The spelling of 99515389 in words is "ninety-nine million, five hundred fifteen thousand, three hundred eighty-nine".