99458217 has 24 divisors (see below), whose sum is σ = 153497760. Its totient is φ = 61871040.

The previous prime is 99458209. The next prime is 99458237. The reversal of 99458217 is 71285499.

It is not a de Polignac number, because 99458217 - 2³ = 99458209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99458207) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7117 + ... + 15797.

It is an arithmetic number, because the mean of its divisors is an integer number (6395740).

Almost surely, 2^99458217 is an apocalyptic number.

It is an amenable number.

99458217 is a deficient number, since it is larger than the sum of its proper divisors (54039543).

99458217 is a wasteful number, since it uses less digits than its factorization.

99458217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8773 (or 8770 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 99458217 is about 9972.8740591667. The cubic root of 99458217 is about 463.3191203250.

The spelling of 99458217 in words is "ninety-nine million, four hundred fifty-eight thousand, two hundred seventeen".