99249615 has 12 divisors (see below), whose sum is σ = 172032744. Its totient is φ = 52933104.

The previous prime is 99249599. The next prime is 99249637. The reversal of 99249615 is 51694299.

99249615 is a `hidden beast` number, since 9 + 9 + 24 + 9 + 615 = 666.

It is not a de Polignac number, because 99249615 - 2⁴ = 99249599 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 2205547 = 99249615 / (9 + 9 + 2 + 4 + 9 + 6 + 1 + 5).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1102729 + ... + 1102818.

It is an arithmetic number, because the mean of its divisors is an integer number (14336062).

Almost surely, 2^99249615 is an apocalyptic number.

99249615 is a deficient number, since it is larger than the sum of its proper divisors (72783129).

99249615 is a wasteful number, since it uses less digits than its factorization.

99249615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2205558 (or 2205555 counting only the distinct ones).

The product of its digits is 174960, while the sum is 45.

The square root of 99249615 is about 9962.4100999708. The cubic root of 99249615 is about 462.9949743432.

The spelling of 99249615 in words is "ninety-nine million, two hundred forty-nine thousand, six hundred fifteen".