99649875 has 32 divisors (see below), whose sum is σ = 178581312. Its totient is φ = 49056000.

The previous prime is 99649873. The next prime is 99649973. The reversal of 99649875 is 57894699.

It is not a de Polignac number, because 99649875 - 2¹ = 99649873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99649873) 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 31 ways as a sum of consecutive naturals, for example, 5346 + ... + 15095.

It is an arithmetic number, because the mean of its divisors is an integer number (5580666).

Almost surely, 2^99649875 is an apocalyptic number.

99649875 is a deficient number, since it is larger than the sum of its proper divisors (78931437).

99649875 is a wasteful number, since it uses less digits than its factorization.

99649875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20472 (or 20462 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 57.

The square root of 99649875 is about 9982.4783996761. The cubic root of 99649875 is about 463.6165378087.

The spelling of 99649875 in words is "ninety-nine million, six hundred forty-nine thousand, eight hundred seventy-five".