113117989 has 2 divisors, whose sum is σ = 113117990. Its totient is φ = 113117988.

The previous prime is 113117987. The next prime is 113118007. The reversal of 113117989 is 989711311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59213025 + 53904964 = 7695^2 + 7342^2 .

It is a cyclic number.

It is not a de Polignac number, because 113117989 - 2¹ = 113117987 is a prime.

Together with 113117987, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113117987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56558994 + 56558995.

It is an arithmetic number, because the mean of its divisors is an integer number (56558995).

Almost surely, 2^113117989 is an apocalyptic number.

It is an amenable number.

113117989 is a deficient number, since it is larger than the sum of its proper divisors (1).

113117989 is an equidigital number, since it uses as much as digits as its factorization.

113117989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 40.

The square root of 113117989 is about 10635.6941005277. The cubic root of 113117989 is about 483.6270220905.

The spelling of 113117989 in words is "one hundred thirteen million, one hundred seventeen thousand, nine hundred eighty-nine".