99874129 has 2 divisors, whose sum is σ = 99874130. Its totient is φ = 99874128.

The previous prime is 99874123. The next prime is 99874139. The reversal of 99874129 is 92147899.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91011600 + 8862529 = 9540^2 + 2977^2 .

It is a cyclic number.

It is not a de Polignac number, because 99874129 - 2¹¹ = 99872081 is a prime.

It is not a weakly prime, because it can be changed into another prime (99874123) 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, 49937064 + 49937065.

It is an arithmetic number, because the mean of its divisors is an integer number (49937065).

Almost surely, 2^99874129 is an apocalyptic number.

It is an amenable number.

99874129 is a deficient number, since it is larger than the sum of its proper divisors (1).

99874129 is an equidigital number, since it uses as much as digits as its factorization.

99874129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 49.

The square root of 99874129 is about 9993.7044683140. The cubic root of 99874129 is about 463.9640544513.

The spelling of 99874129 in words is "ninety-nine million, eight hundred seventy-four thousand, one hundred twenty-nine".