99791611 has 2 divisors, whose sum is σ = 99791612. Its totient is φ = 99791610.

The previous prime is 99791569. The next prime is 99791623. The reversal of 99791611 is 11619799.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (11619799) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99791611 - 2⁹ = 99791099 is a prime.

It is not a weakly prime, because it can be changed into another prime (99791311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49895805 + 49895806.

It is an arithmetic number, because the mean of its divisors is an integer number (49895806).

Almost surely, 2^99791611 is an apocalyptic number.

99791611 is a deficient number, since it is larger than the sum of its proper divisors (1).

99791611 is an equidigital number, since it uses as much as digits as its factorization.

99791611 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30618, while the sum is 43.

The square root of 99791611 is about 9989.5751160898. The cubic root of 99791611 is about 463.8362404548.

The spelling of 99791611 in words is "ninety-nine million, seven hundred ninety-one thousand, six hundred eleven".