99624997 has 2 divisors, whose sum is σ = 99624998. Its totient is φ = 99624996.

The previous prime is 99624929. The next prime is 99625003. The reversal of 99624997 is 79942699.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99380961 + 244036 = 9969^2 + 494^2 .

It is a cyclic number.

It is not a de Polignac number, because 99624997 - 2⁷ = 99624869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99624907) 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, 49812498 + 49812499.

It is an arithmetic number, because the mean of its divisors is an integer number (49812499).

Almost surely, 2^99624997 is an apocalyptic number.

It is an amenable number.

99624997 is a deficient number, since it is larger than the sum of its proper divisors (1).

99624997 is an equidigital number, since it uses as much as digits as its factorization.

99624997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2204496, while the sum is 55.

The square root of 99624997 is about 9981.2322385565. The cubic root of 99624997 is about 463.5779533409.

The spelling of 99624997 in words is "ninety-nine million, six hundred twenty-four thousand, nine hundred ninety-seven".