99445657 has 2 divisors, whose sum is σ = 99445658. Its totient is φ = 99445656.

The previous prime is 99445579. The next prime is 99445679. The reversal of 99445657 is 75654499.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56987401 + 42458256 = 7549^2 + 6516^2 .

It is a cyclic number.

It is not a de Polignac number, because 99445657 - 2¹¹ = 99443609 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99445657.

It is not a weakly prime, because it can be changed into another prime (99445457) 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, 49722828 + 49722829.

It is an arithmetic number, because the mean of its divisors is an integer number (49722829).

Almost surely, 2^99445657 is an apocalyptic number.

It is an amenable number.

99445657 is a deficient number, since it is larger than the sum of its proper divisors (1).

99445657 is an equidigital number, since it uses as much as digits as its factorization.

99445657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1360800, while the sum is 49.

The square root of 99445657 is about 9972.2443311423. The cubic root of 99445657 is about 463.2996162112.

The spelling of 99445657 in words is "ninety-nine million, four hundred forty-five thousand, six hundred fifty-seven".