99913867 has 2 divisors, whose sum is σ = 99913868. Its totient is φ = 99913866.

The previous prime is 99913789. The next prime is 99913871. The reversal of 99913867 is 76831999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99913867 - 2⁷ = 99913739 is a prime.

It is not a weakly prime, because it can be changed into another prime (99913367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49956933 + 49956934.

It is an arithmetic number, because the mean of its divisors is an integer number (49956934).

Almost surely, 2^99913867 is an apocalyptic number.

99913867 is a deficient number, since it is larger than the sum of its proper divisors (1).

99913867 is an equidigital number, since it uses as much as digits as its factorization.

99913867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 734832, while the sum is 52.

The square root of 99913867 is about 9995.6924222387. The cubic root of 99913867 is about 464.0255804243.

The spelling of 99913867 in words is "ninety-nine million, nine hundred thirteen thousand, eight hundred sixty-seven".