99217149 has 16 divisors (see below), whose sum is σ = 137121600. Its totient is φ = 63737856.

The previous prime is 99217093. The next prime is 99217169. The reversal of 99217149 is 94171299.

It is not a de Polignac number, because 99217149 - 2⁷ = 99217021 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99217149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99217169) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66162 + ... + 67644.

It is an arithmetic number, because the mean of its divisors is an integer number (8570100).

Almost surely, 2^99217149 is an apocalyptic number.

It is an amenable number.

99217149 is a deficient number, since it is larger than the sum of its proper divisors (37904451).

99217149 is a wasteful number, since it uses less digits than its factorization.

99217149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2284.

The product of its digits is 40824, while the sum is 42.

The square root of 99217149 is about 9960.7805417046. The cubic root of 99217149 is about 462.9444846959.

The spelling of 99217149 in words is "ninety-nine million, two hundred seventeen thousand, one hundred forty-nine".