113947789 has 2 divisors, whose sum is σ = 113947790. Its totient is φ = 113947788.

The previous prime is 113947747. The next prime is 113947793. The reversal of 113947789 is 987749311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98604900 + 15342889 = 9930^2 + 3917^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113947789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113947709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56973894 + 56973895.

It is an arithmetic number, because the mean of its divisors is an integer number (56973895).

Almost surely, 2^113947789 is an apocalyptic number.

It is an amenable number.

113947789 is a deficient number, since it is larger than the sum of its proper divisors (1).

113947789 is an equidigital number, since it uses as much as digits as its factorization.

113947789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 381024, while the sum is 49.

The square root of 113947789 is about 10674.6329679292. The cubic root of 113947789 is about 484.8067235690.

The spelling of 113947789 in words is "one hundred thirteen million, nine hundred forty-seven thousand, seven hundred eighty-nine".