99790111 has 2 divisors, whose sum is σ = 99790112. Its totient is φ = 99790110.

The previous prime is 99790099. The next prime is 99790151. The reversal of 99790111 is 11109799.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99790111 - 2⁵ = 99790079 is a prime.

It is a Chen prime.

It is the 9990-th Hogben number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99790151) by changing a digit.

It is a nontrivial repunit in base 9989.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49895055 + 49895056.

It is an arithmetic number, because the mean of its divisors is an integer number (49895056).

Almost surely, 2^99790111 is an apocalyptic number.

99790111 is a deficient number, since it is larger than the sum of its proper divisors (1).

99790111 is an equidigital number, since it uses as much as digits as its factorization.

99790111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5103, while the sum is 37.

The square root of 99790111 is about 9989.5000375394. The cubic root of 99790111 is about 463.8339164189.

The spelling of 99790111 in words is "ninety-nine million, seven hundred ninety thousand, one hundred eleven".