99996139 has 2 divisors, whose sum is σ = 99996140. Its totient is φ = 99996138.

The previous prime is 99996133. The next prime is 99996151. The reversal of 99996139 is 93169999.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99996139 - 2³ = 99996131 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99996139.

It is not a weakly prime, because it can be changed into another prime (99996131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49998069 + 49998070.

It is an arithmetic number, because the mean of its divisors is an integer number (49998070).

Almost surely, 2^99996139 is an apocalyptic number.

99996139 is a deficient number, since it is larger than the sum of its proper divisors (1).

99996139 is an equidigital number, since it uses as much as digits as its factorization.

99996139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1062882, while the sum is 55.

The square root of 99996139 is about 9999.8069481365. The cubic root of 99996139 is about 464.1529095596.

It can be divided in two parts, 999961 and 39, that added together give a 6-th power (1000000 = 10⁶).

The spelling of 99996139 in words is "ninety-nine million, nine hundred ninety-six thousand, one hundred thirty-nine".