99972233 has 2 divisors, whose sum is σ = 99972234. Its totient is φ = 99972232.

The previous prime is 99972221. The next prime is 99972269. The reversal of 99972233 is 33227999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64128064 + 35844169 = 8008^2 + 5987^2 .

It is a cyclic number.

It is not a de Polignac number, because 99972233 - 2¹² = 99968137 is a prime.

It is not a weakly prime, because it can be changed into another prime (99972533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49986116 + 49986117.

It is an arithmetic number, because the mean of its divisors is an integer number (49986117).

Almost surely, 2^99972233 is an apocalyptic number.

It is an amenable number.

99972233 is a deficient number, since it is larger than the sum of its proper divisors (1).

99972233 is an equidigital number, since it uses as much as digits as its factorization.

99972233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 183708, while the sum is 44.

The square root of 99972233 is about 9998.6115536108. The cubic root of 99972233 is about 464.1159183853.

The spelling of 99972233 in words is "ninety-nine million, nine hundred seventy-two thousand, two hundred thirty-three".