99118919 has 2 divisors, whose sum is σ = 99118920. Its totient is φ = 99118918.

The previous prime is 99118907. The next prime is 99118927. The reversal of 99118919 is 91981199.

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-99118919 is a prime.

It is a super-2 number, since 2×99118919² = 19649120207457122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99118949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49559459 + 49559460.

It is an arithmetic number, because the mean of its divisors is an integer number (49559460).

Almost surely, 2^99118919 is an apocalyptic number.

99118919 is a deficient number, since it is larger than the sum of its proper divisors (1).

99118919 is an equidigital number, since it uses as much as digits as its factorization.

99118919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52488, while the sum is 47.

The square root of 99118919 is about 9955.8484821737. The cubic root of 99118919 is about 462.7916547568.

The spelling of 99118919 in words is "ninety-nine million, one hundred eighteen thousand, nine hundred nineteen".