99857874 has 16 divisors (see below), whose sum is σ = 201484512. Its totient is φ = 32991168.

The previous prime is 99857873. The next prime is 99857887. The reversal of 99857874 is 47875899.

It is a super-5 number, since 5×99857874⁵ (a number of 41 digits) contains 55555 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (99857873) 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 7 ways as a sum of consecutive naturals, for example, 72964 + ... + 74319.

It is an arithmetic number, because the mean of its divisors is an integer number (12592782).

Almost surely, 2^99857874 is an apocalyptic number.

99857874 is an abundant number, since it is smaller than the sum of its proper divisors (101626638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99857874 is a wasteful number, since it uses less digits than its factorization.

99857874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147401.

The product of its digits is 5080320, while the sum is 57.

The square root of 99857874 is about 9992.8911732291. The cubic root of 99857874 is about 463.9388822839.

The spelling of 99857874 in words is "ninety-nine million, eight hundred fifty-seven thousand, eight hundred seventy-four".