99881059 has 2 divisors, whose sum is σ = 99881060. Its totient is φ = 99881058.

The previous prime is 99881053. The next prime is 99881077. The reversal of 99881059 is 95018899.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99881059 - 2⁵ = 99881027 is a prime.

It is a super-2 number, since 2×99881059² = 19952451893922962, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (99881053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49940529 + 49940530.

It is an arithmetic number, because the mean of its divisors is an integer number (49940530).

Almost surely, 2^99881059 is an apocalyptic number.

99881059 is a deficient number, since it is larger than the sum of its proper divisors (1).

99881059 is an equidigital number, since it uses as much as digits as its factorization.

99881059 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 233280, while the sum is 49.

The square root of 99881059 is about 9994.0511805774. The cubic root of 99881059 is about 463.9747852801.

The spelling of 99881059 in words is "ninety-nine million, eight hundred eighty-one thousand, fifty-nine".