113688889 has 2 divisors, whose sum is σ = 113688890. Its totient is φ = 113688888.

The previous prime is 113688871. The next prime is 113688917. The reversal of 113688889 is 988886311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90725625 + 22963264 = 9525^2 + 4792^2 .

It is a cyclic number.

It is not a de Polignac number, because 113688889 - 2¹¹ = 113686841 is a prime.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (113688829) 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, 56844444 + 56844445.

It is an arithmetic number, because the mean of its divisors is an integer number (56844445).

Almost surely, 2^113688889 is an apocalyptic number.

It is an amenable number.

113688889 is a deficient number, since it is larger than the sum of its proper divisors (1).

113688889 is an equidigital number, since it uses as much as digits as its factorization.

113688889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 663552, while the sum is 52.

The square root of 113688889 is about 10662.4991910902. The cubic root of 113688889 is about 484.4392697737.

The spelling of 113688889 in words is "one hundred thirteen million, six hundred eighty-eight thousand, eight hundred eighty-nine".