99445579 has 2 divisors, whose sum is σ = 99445580. Its totient is φ = 99445578.

The previous prime is 99445547. The next prime is 99445657. The reversal of 99445579 is 97554499.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99445579 - 2⁵ = 99445547 is a prime.

It is not a weakly prime, because it can be changed into another prime (99445519) 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, 49722789 + 49722790.

It is an arithmetic number, because the mean of its divisors is an integer number (49722790).

Almost surely, 2^99445579 is an apocalyptic number.

99445579 is a deficient number, since it is larger than the sum of its proper divisors (1).

99445579 is an equidigital number, since it uses as much as digits as its factorization.

99445579 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2041200, while the sum is 52.

The square root of 99445579 is about 9972.2404202867. The cubic root of 99445579 is about 463.2994950818.

The spelling of 99445579 in words is "ninety-nine million, four hundred forty-five thousand, five hundred seventy-nine".