99216549 has 16 divisors (see below), whose sum is σ = 153379200. Its totient is φ = 63268128.

The previous prime is 99216541. The next prime is 99216553. The reversal of 99216549 is 94561299.

99216549 is a `hidden beast` number, since 9 + 92 + 16 + 549 = 666.

It is not a de Polignac number, because 99216549 - 2³ = 99216541 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99216541) 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, 79264 + ... + 80505.

It is an arithmetic number, because the mean of its divisors is an integer number (9586200).

Almost surely, 2^99216549 is an apocalyptic number.

It is an amenable number.

99216549 is a deficient number, since it is larger than the sum of its proper divisors (54162651).

99216549 is a wasteful number, since it uses less digits than its factorization.

99216549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159801 (or 159795 counting only the distinct ones).

The product of its digits is 174960, while the sum is 45.

The square root of 99216549 is about 9960.7504235374. The cubic root of 99216549 is about 462.9435514996.

The spelling of 99216549 in words is "ninety-nine million, two hundred sixteen thousand, five hundred forty-nine".