99993497 has 2 divisors, whose sum is σ = 99993498. Its totient is φ = 99993496.

The previous prime is 99993469. The next prime is 99993511. The reversal of 99993497 is 79439999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83704201 + 16289296 = 9149^2 + 4036^2 .

It is a cyclic number.

It is not a de Polignac number, because 99993497 - 2⁶ = 99993433 is a prime.

It is not a weakly prime, because it can be changed into another prime (99993407) 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, 49996748 + 49996749.

It is an arithmetic number, because the mean of its divisors is an integer number (49996749).

Almost surely, 2^99993497 is an apocalyptic number.

It is an amenable number.

99993497 is a deficient number, since it is larger than the sum of its proper divisors (1).

99993497 is an equidigital number, since it uses as much as digits as its factorization.

99993497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4960116, while the sum is 59.

The square root of 99993497 is about 9999.6748447137. The cubic root of 99993497 is about 464.1488217258.

The spelling of 99993497 in words is "ninety-nine million, nine hundred ninety-three thousand, four hundred ninety-seven".