99515385 has 80 divisors (see below), whose sum is σ = 190357200. Its totient is φ = 49641984.

The previous prime is 99515357. The next prime is 99515387. The reversal of 99515385 is 58351599.

It can be written as a sum of positive squares in 8 ways, for example, as 17214201 + 82301184 = 4149^2 + 9072^2 .

It is not a de Polignac number, because 99515385 - 2¹⁶ = 99449849 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 99515385.

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 79 ways as a sum of consecutive naturals, for example, 434451 + ... + 434679.

It is an arithmetic number, because the mean of its divisors is an integer number (2379465).

Almost surely, 2^99515385 is an apocalyptic number.

It is an amenable number.

99515385 is a deficient number, since it is larger than the sum of its proper divisors (90841815).

99515385 is a wasteful number, since it uses less digits than its factorization.

99515385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312 (or 303 counting only the distinct ones).

The product of its digits is 243000, while the sum is 45.

The square root of 99515385 is about 9975.7398221886. The cubic root of 99515385 is about 463.4078743600.

The spelling of 99515385 in words is "ninety-nine million, five hundred fifteen thousand, three hundred eighty-five".