99957593 has 2 divisors, whose sum is σ = 99957594. Its totient is φ = 99957592.

The previous prime is 99957587. The next prime is 99957607. The reversal of 99957593 is 39575999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69839449 + 30118144 = 8357^2 + 5488^2 .

It is a cyclic number.

It is not a de Polignac number, because 99957593 - 2⁸ = 99957337 is a prime.

It is not a weakly prime, because it can be changed into another prime (99957553) 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 as a sum of consecutive naturals, namely, 49978796 + 49978797.

It is an arithmetic number, because the mean of its divisors is an integer number (49978797).

Almost surely, 2^99957593 is an apocalyptic number.

It is an amenable number.

99957593 is a deficient number, since it is larger than the sum of its proper divisors (1).

99957593 is an equidigital number, since it uses as much as digits as its factorization.

99957593 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3444525, while the sum is 56.

The square root of 99957593 is about 9997.8794251581. The cubic root of 99957593 is about 464.0932621318.

The spelling of 99957593 in words is "ninety-nine million, nine hundred fifty-seven thousand, five hundred ninety-three".