99135640 has 32 divisors (see below), whose sum is σ = 228246480. Its totient is φ = 38731392.

The previous prime is 99135629. The next prime is 99135661. The reversal of 99135640 is 4653199.

It is a self number, because there is not a number n which added to its sum of digits gives 99135640.

It is a congruent number.

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, 27099 + ... + 30538.

Almost surely, 2^99135640 is an apocalyptic number.

It is an amenable number.

99135640 is an abundant number, since it is smaller than the sum of its proper divisors (129110840).

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

99135640 is a wasteful number, since it uses less digits than its factorization.

99135640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57691 (or 57687 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 99135640 is about 9956.6882044182. The cubic root of 99135640 is about 462.8176770481.

The spelling of 99135640 in words is "ninety-nine million, one hundred thirty-five thousand, six hundred forty".