99874187 has 4 divisors (see below), whose sum is σ = 114141936. Its totient is φ = 85606440.

The previous prime is 99874169. The next prime is 99874189. The reversal of 99874187 is 78147899.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78147899 = 43 ⋅1817393.

It is a cyclic number.

It is not a de Polignac number, because 99874187 - 2⁶ = 99874123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99874189) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7133864 + ... + 7133877.

It is an arithmetic number, because the mean of its divisors is an integer number (28535484).

Almost surely, 2^99874187 is an apocalyptic number.

99874187 is a deficient number, since it is larger than the sum of its proper divisors (14267749).

99874187 is a wasteful number, since it uses less digits than its factorization.

99874187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14267748.

The product of its digits is 1016064, while the sum is 53.

The square root of 99874187 is about 9993.7073701405. The cubic root of 99874187 is about 463.9641442641.

The spelling of 99874187 in words is "ninety-nine million, eight hundred seventy-four thousand, one hundred eighty-seven".