99185899 has 2 divisors, whose sum is σ = 99185900. Its totient is φ = 99185898.

The previous prime is 99185881. The next prime is 99185923. The reversal of 99185899 is 99858199.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99185899 - 2¹³ = 99177707 is a prime.

It is not a weakly prime, because it can be changed into another prime (99185819) by changing a digit.

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, 49592949 + 49592950.

It is an arithmetic number, because the mean of its divisors is an integer number (49592950).

Almost surely, 2^99185899 is an apocalyptic number.

99185899 is a deficient number, since it is larger than the sum of its proper divisors (1).

99185899 is an equidigital number, since it uses as much as digits as its factorization.

99185899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2099520, while the sum is 58.

The square root of 99185899 is about 9959.2117659984. The cubic root of 99185899 is about 462.8958757124.

The spelling of 99185899 in words is "ninety-nine million, one hundred eighty-five thousand, eight hundred ninety-nine".