99997875 has 32 divisors (see below), whose sum is σ = 184891200. Its totient is φ = 53330400.

The previous prime is 99997873. The next prime is 99997879. The reversal of 99997875 is 57879999.

It is not a de Polignac number, because 99997875 - 2¹ = 99997873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99997871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11440 + ... + 18189.

It is an arithmetic number, because the mean of its divisors is an integer number (5777850).

Almost surely, 2^99997875 is an apocalyptic number.

99997875 is a deficient number, since it is larger than the sum of its proper divisors (84893325).

99997875 is a wasteful number, since it uses less digits than its factorization.

99997875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29653 (or 29637 counting only the distinct ones).

The product of its digits is 12859560, while the sum is 63.

The square root of 99997875 is about 9999.8937494355. The cubic root of 99997875 is about 464.1555955459.

The spelling of 99997875 in words is "ninety-nine million, nine hundred ninety-seven thousand, eight hundred seventy-five".