99049609 has 2 divisors, whose sum is σ = 99049610. Its totient is φ = 99049608.

The previous prime is 99049607. The next prime is 99049637. The reversal of 99049609 is 90694099.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76038400 + 23011209 = 8720^2 + 4797^2 .

It is a cyclic number.

It is not a de Polignac number, because 99049609 - 2¹ = 99049607 is a prime.

Together with 99049607, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (99049607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49524804 + 49524805.

It is an arithmetic number, because the mean of its divisors is an integer number (49524805).

Almost surely, 2^99049609 is an apocalyptic number.

It is an amenable number.

99049609 is a deficient number, since it is larger than the sum of its proper divisors (1).

99049609 is an equidigital number, since it uses as much as digits as its factorization.

99049609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 157464, while the sum is 46.

The square root of 99049609 is about 9952.3670048888. The cubic root of 99049609 is about 462.6837588767.

The spelling of 99049609 in words is "ninety-nine million, forty-nine thousand, six hundred nine".