99229921 has 8 divisors (see below), whose sum is σ = 113578560. Its totient is φ = 84924528.

The previous prime is 99229883. The next prime is 99229931. The reversal of 99229921 is 12992299.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 99229921 - 2¹¹ = 99227873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99229931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5731 + ... + 15208.

It is an arithmetic number, because the mean of its divisors is an integer number (14197320).

Almost surely, 2^99229921 is an apocalyptic number.

It is an amenable number.

99229921 is a deficient number, since it is larger than the sum of its proper divisors (14348639).

99229921 is a wasteful number, since it uses less digits than its factorization.

99229921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21623.

The product of its digits is 52488, while the sum is 43.

The square root of 99229921 is about 9961.4216354896. The cubic root of 99229921 is about 462.9643484437.

The spelling of 99229921 in words is "ninety-nine million, two hundred twenty-nine thousand, nine hundred twenty-one".