99549899 has 2 divisors, whose sum is σ = 99549900. Its totient is φ = 99549898.

The previous prime is 99549889. The next prime is 99549907. The reversal of 99549899 is 99894599.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99549899 - 2⁸ = 99549643 is a prime.

It is not a weakly prime, because it can be changed into another prime (99549829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49774949 + 49774950.

It is an arithmetic number, because the mean of its divisors is an integer number (49774950).

Almost surely, 2^99549899 is an apocalyptic number.

99549899 is a deficient number, since it is larger than the sum of its proper divisors (1).

99549899 is an equidigital number, since it uses as much as digits as its factorization.

99549899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9447840, while the sum is 62.

The square root of 99549899 is about 9977.4695689839. The cubic root of 99549899 is about 463.4614413226.

The spelling of 99549899 in words is "ninety-nine million, five hundred forty-nine thousand, eight hundred ninety-nine".