99624433 has 2 divisors, whose sum is σ = 99624434. Its totient is φ = 99624432.

The previous prime is 99624401. The next prime is 99624439. The reversal of 99624433 is 33442699.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66308449 + 33315984 = 8143^2 + 5772^2 .

It is an emirp because it is prime and its reverse (33442699) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99624433 - 2⁵ = 99624401 is a prime.

It is not a weakly prime, because it can be changed into another prime (99624439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49812216 + 49812217.

It is an arithmetic number, because the mean of its divisors is an integer number (49812217).

Almost surely, 2^99624433 is an apocalyptic number.

It is an amenable number.

99624433 is a deficient number, since it is larger than the sum of its proper divisors (1).

99624433 is an equidigital number, since it uses as much as digits as its factorization.

99624433 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 40.

The square root of 99624433 is about 9981.2039854919. The cubic root of 99624433 is about 463.5770785321.

The spelling of 99624433 in words is "ninety-nine million, six hundred twenty-four thousand, four hundred thirty-three".