99924217 has 4 divisors (see below), whose sum is σ = 102248080. Its totient is φ = 97600356.

The previous prime is 99924203. The next prime is 99924233. The reversal of 99924217 is 71242999.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99924217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43), and also a Moran number because the ratio is a prime number: 2323819 = 99924217 / (9 + 9 + 9 + 2 + 4 + 2 + 1 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99924277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1161867 + ... + 1161952.

It is an arithmetic number, because the mean of its divisors is an integer number (25562020).

Almost surely, 2^99924217 is an apocalyptic number.

It is an amenable number.

99924217 is a deficient number, since it is larger than the sum of its proper divisors (2323863).

99924217 is a wasteful number, since it uses less digits than its factorization.

99924217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2323862.

The product of its digits is 81648, while the sum is 43.

The square root of 99924217 is about 9996.2101318450. The cubic root of 99924217 is about 464.0416025545.

The spelling of 99924217 in words is "ninety-nine million, nine hundred twenty-four thousand, two hundred seventeen".