99190907 has 2 divisors, whose sum is σ = 99190908. Its totient is φ = 99190906.

The previous prime is 99190901. The next prime is 99190921. The reversal of 99190907 is 70909199.

It is a weak prime.

It is an emirp because it is prime and its reverse (70909199) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99190907 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (99190901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49595453 + 49595454.

It is an arithmetic number, because the mean of its divisors is an integer number (49595454).

Almost surely, 2^99190907 is an apocalyptic number.

99190907 is a deficient number, since it is larger than the sum of its proper divisors (1).

99190907 is an equidigital number, since it uses as much as digits as its factorization.

99190907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45927, while the sum is 44.

The square root of 99190907 is about 9959.4631883450. The cubic root of 99190907 is about 462.9036662806.

The spelling of 99190907 in words is "ninety-nine million, one hundred ninety thousand, nine hundred seven".