99317388 has 24 divisors (see below), whose sum is σ = 233513280. Its totient is φ = 32852560.

The previous prime is 99317369. The next prime is 99317411. The reversal of 99317388 is 88371399.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30018 + ... + 33161.

It is an arithmetic number, because the mean of its divisors is an integer number (9729720).

Almost surely, 2^99317388 is an apocalyptic number.

It is an amenable number.

99317388 is an abundant number, since it is smaller than the sum of its proper divisors (134195892).

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

99317388 is a wasteful number, since it uses less digits than its factorization.

99317388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63317 (or 63315 counting only the distinct ones).

The product of its digits is 326592, while the sum is 48.

The square root of 99317388 is about 9965.8109554617. The cubic root of 99317388 is about 463.1003363599.

It can be divided in two parts, 993 and 17388, that added together give a palindrome (18381).

The spelling of 99317388 in words is "ninety-nine million, three hundred seventeen thousand, three hundred eighty-eight".