113909689 has 2 divisors, whose sum is σ = 113909690. Its totient is φ = 113909688.

The previous prime is 113909683. The next prime is 113909713. The reversal of 113909689 is 986909311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107744400 + 6165289 = 10380^2 + 2483^2 .

It is an emirp because it is prime and its reverse (986909311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 113909689 - 2⁹ = 113909177 is a prime.

It is not a weakly prime, because it can be changed into another prime (113909683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56954844 + 56954845.

It is an arithmetic number, because the mean of its divisors is an integer number (56954845).

Almost surely, 2^113909689 is an apocalyptic number.

It is an amenable number.

113909689 is a deficient number, since it is larger than the sum of its proper divisors (1).

113909689 is an equidigital number, since it uses as much as digits as its factorization.

113909689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 104976, while the sum is 46.

The square root of 113909689 is about 10672.8482140430. The cubic root of 113909689 is about 484.7526836284.

The spelling of 113909689 in words is "one hundred thirteen million, nine hundred nine thousand, six hundred eighty-nine".