99749975 has 24 divisors (see below), whose sum is σ = 135741312. Its totient is φ = 72259200.

The previous prime is 99749963. The next prime is 99749977. The reversal of 99749975 is 57994799.

It is not a de Polignac number, because 99749975 - 2⁶ = 99749911 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 (99749977) 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 23 ways as a sum of consecutive naturals, for example, 14330 + ... + 20120.

It is an arithmetic number, because the mean of its divisors is an integer number (5655888).

Almost surely, 2^99749975 is an apocalyptic number.

99749975 is a deficient number, since it is larger than the sum of its proper divisors (35991337).

99749975 is a wasteful number, since it uses less digits than its factorization.

99749975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5867 (or 5862 counting only the distinct ones).

The product of its digits is 6429780, while the sum is 59.

The square root of 99749975 is about 9987.4909261536. The cubic root of 99749975 is about 463.7717227663.

The spelling of 99749975 in words is "ninety-nine million, seven hundred forty-nine thousand, nine hundred seventy-five".