99921338 has 32 divisors (see below), whose sum is σ = 173560320. Its totient is φ = 42694960.

The previous prime is 99921331. The next prime is 99921347. The reversal of 99921338 is 83312999.

It is not an unprimeable number, because it can be changed into a prime (99921331) 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 15 ways as a sum of consecutive naturals, for example, 28181 + ... + 31527.

It is an arithmetic number, because the mean of its divisors is an integer number (5423760).

Almost surely, 2^99921338 is an apocalyptic number.

99921338 is a deficient number, since it is larger than the sum of its proper divisors (73638982).

99921338 is a wasteful number, since it uses less digits than its factorization.

99921338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3442.

The product of its digits is 104976, while the sum is 44.

The square root of 99921338 is about 9996.0661262319. The cubic root of 99921338 is about 464.0371458817.

The spelling of 99921338 in words is "ninety-nine million, nine hundred twenty-one thousand, three hundred thirty-eight".