99397619 has 2 divisors, whose sum is σ = 99397620. Its totient is φ = 99397618.

The previous prime is 99397591. The next prime is 99397637. The reversal of 99397619 is 91679399.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99397619 - 2¹⁶ = 99332083 is a prime.

It is a super-2 number, since 2×99397619² = 19759773325738322, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (99397699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49698809 + 49698810.

It is an arithmetic number, because the mean of its divisors is an integer number (49698810).

Almost surely, 2^99397619 is an apocalyptic number.

99397619 is a deficient number, since it is larger than the sum of its proper divisors (1).

99397619 is an equidigital number, since it uses as much as digits as its factorization.

99397619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 826686, while the sum is 53.

The square root of 99397619 is about 9969.8354550113. The cubic root of 99397619 is about 463.2250040319.

The spelling of 99397619 in words is "ninety-nine million, three hundred ninety-seven thousand, six hundred nineteen".