99233921 has 2 divisors, whose sum is σ = 99233922. Its totient is φ = 99233920.

The previous prime is 99233917. The next prime is 99233957. The reversal of 99233921 is 12933299.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74632321 + 24601600 = 8639^2 + 4960^2 .

It is a cyclic number.

It is not a de Polignac number, because 99233921 - 2² = 99233917 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (99233971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49616960 + 49616961.

It is an arithmetic number, because the mean of its divisors is an integer number (49616961).

Almost surely, 2^99233921 is an apocalyptic number.

It is an amenable number.

99233921 is a deficient number, since it is larger than the sum of its proper divisors (1).

99233921 is an equidigital number, since it uses as much as digits as its factorization.

99233921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26244, while the sum is 38.

The square root of 99233921 is about 9961.6224080217. The cubic root of 99233921 is about 462.9705691229.

The spelling of 99233921 in words is "ninety-nine million, two hundred thirty-three thousand, nine hundred twenty-one".