99838261 has 2 divisors, whose sum is σ = 99838262. Its totient is φ = 99838260.

The previous prime is 99838253. The next prime is 99838301. The reversal of 99838261 is 16283899.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59197636 + 40640625 = 7694^2 + 6375^2 .

It is a cyclic number.

It is not a de Polignac number, because 99838261 - 2³ = 99838253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99838201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49919130 + 49919131.

It is an arithmetic number, because the mean of its divisors is an integer number (49919131).

Almost surely, 2^99838261 is an apocalyptic number.

It is an amenable number.

99838261 is a deficient number, since it is larger than the sum of its proper divisors (1).

99838261 is an equidigital number, since it uses as much as digits as its factorization.

99838261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 46.

The square root of 99838261 is about 9991.9097774149. The cubic root of 99838261 is about 463.9085063482.

The spelling of 99838261 in words is "ninety-nine million, eight hundred thirty-eight thousand, two hundred sixty-one".