99059881 has 2 divisors, whose sum is σ = 99059882. Its totient is φ = 99059880.

The previous prime is 99059869. The next prime is 99059887. The reversal of 99059881 is 18895099.

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., 96353856 + 2706025 = 9816^2 + 1645^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99059881 is a prime.

It is a super-2 number, since 2×99059881² = 19625720047468322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (99059887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49529940 + 49529941.

It is an arithmetic number, because the mean of its divisors is an integer number (49529941).

Almost surely, 2^99059881 is an apocalyptic number.

It is an amenable number.

99059881 is a deficient number, since it is larger than the sum of its proper divisors (1).

99059881 is an equidigital number, since it uses as much as digits as its factorization.

99059881 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 99059881 is about 9952.8830496495. The cubic root of 99059881 is about 462.6997526241.

The spelling of 99059881 in words is "ninety-nine million, fifty-nine thousand, eight hundred eighty-one".