99795281 has 2 divisors, whose sum is σ = 99795282. Its totient is φ = 99795280.

The previous prime is 99795263. The next prime is 99795317. The reversal of 99795281 is 18259799.

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., 66259600 + 33535681 = 8140^2 + 5791^2 .

It is a cyclic number.

It is not a de Polignac number, because 99795281 - 2²⁶ = 32686417 is a prime.

It is a super-2 number, since 2×99795281² = 19918196219737922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (99795251) 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, 49897640 + 49897641.

It is an arithmetic number, because the mean of its divisors is an integer number (49897641).

Almost surely, 2^99795281 is an apocalyptic number.

It is an amenable number.

99795281 is a deficient number, since it is larger than the sum of its proper divisors (1).

99795281 is an equidigital number, since it uses as much as digits as its factorization.

99795281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 408240, while the sum is 50.

The square root of 99795281 is about 9989.7588058972. The cubic root of 99795281 is about 463.8419264977.

The spelling of 99795281 in words is "ninety-nine million, seven hundred ninety-five thousand, two hundred eighty-one".