99618894 has 12 divisors (see below), whose sum is σ = 215840976. Its totient is φ = 33206292.

The previous prime is 99618887. The next prime is 99618899. The reversal of 99618894 is 49881699.

It is a self number, because there is not a number n which added to its sum of digits gives 99618894.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99618899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2767174 + ... + 2767209.

It is an arithmetic number, because the mean of its divisors is an integer number (17986748).

Almost surely, 2^99618894 is an apocalyptic number.

99618894 is an abundant number, since it is smaller than the sum of its proper divisors (116222082).

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

99618894 is a wasteful number, since it uses less digits than its factorization.

99618894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5534391 (or 5534388 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 54.

The square root of 99618894 is about 9980.9265100992. The cubic root of 99618894 is about 463.5684869281.

The spelling of 99618894 in words is "ninety-nine million, six hundred eighteen thousand, eight hundred ninety-four".