99913739 has 2 divisors, whose sum is σ = 99913740. Its totient is φ = 99913738.

The previous prime is 99913717. The next prime is 99913741. The reversal of 99913739 is 93731999.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99913739 is a prime.

Together with 99913741, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (99913769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49956869 + 49956870.

It is an arithmetic number, because the mean of its divisors is an integer number (49956870).

Almost surely, 2^99913739 is an apocalyptic number.

99913739 is a deficient number, since it is larger than the sum of its proper divisors (1).

99913739 is an equidigital number, since it uses as much as digits as its factorization.

99913739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 413343, while the sum is 50.

The square root of 99913739 is about 9995.6860194786. The cubic root of 99913739 is about 464.0253822693.

The spelling of 99913739 in words is "ninety-nine million, nine hundred thirteen thousand, seven hundred thirty-nine".