99886261 has 2 divisors, whose sum is σ = 99886262. Its totient is φ = 99886260.

The previous prime is 99886181. The next prime is 99886301. The reversal of 99886261 is 16268899.

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., 84824100 + 15062161 = 9210^2 + 3881^2 .

It is an emirp because it is prime and its reverse (16268899) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99886261 - 2⁷ = 99886133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99886361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49943130 + 49943131.

It is an arithmetic number, because the mean of its divisors is an integer number (49943131).

Almost surely, 2^99886261 is an apocalyptic number.

It is an amenable number.

99886261 is a deficient number, since it is larger than the sum of its proper divisors (1).

99886261 is an equidigital number, since it uses as much as digits as its factorization.

99886261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 373248, while the sum is 49.

The square root of 99886261 is about 9994.3114320097. The cubic root of 99886261 is about 463.9828400436.

The spelling of 99886261 in words is "ninety-nine million, eight hundred eighty-six thousand, two hundred sixty-one".