99544169 has 2 divisors, whose sum is σ = 99544170. Its totient is φ = 99544168.

The previous prime is 99544147. The next prime is 99544219. The reversal of 99544169 is 96144599.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94322944 + 5221225 = 9712^2 + 2285^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99544169 is a prime.

It is a super-2 number, since 2×99544169² = 19818083163801122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (99544369) 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, 49772084 + 49772085.

It is an arithmetic number, because the mean of its divisors is an integer number (49772085).

Almost surely, 2^99544169 is an apocalyptic number.

It is an amenable number.

99544169 is a deficient number, since it is larger than the sum of its proper divisors (1).

99544169 is an equidigital number, since it uses as much as digits as its factorization.

99544169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 349920, while the sum is 47.

The square root of 99544169 is about 9977.1824178973. The cubic root of 99544169 is about 463.4525490148.

The spelling of 99544169 in words is "ninety-nine million, five hundred forty-four thousand, one hundred sixty-nine".