113861789 has 2 divisors, whose sum is σ = 113861790. Its totient is φ = 113861788.

The previous prime is 113861779. The next prime is 113861809. The reversal of 113861789 is 987168311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72965764 + 40896025 = 8542^2 + 6395^2 .

It is an emirp because it is prime and its reverse (987168311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 113861789 - 2⁸ = 113861533 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113861749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56930894 + 56930895.

It is an arithmetic number, because the mean of its divisors is an integer number (56930895).

Almost surely, 2^113861789 is an apocalyptic number.

It is an amenable number.

113861789 is a deficient number, since it is larger than the sum of its proper divisors (1).

113861789 is an equidigital number, since it uses as much as digits as its factorization.

113861789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 44.

The square root of 113861789 is about 10670.6039660368. The cubic root of 113861789 is about 484.6847265500.

The spelling of 113861789 in words is "one hundred thirteen million, eight hundred sixty-one thousand, seven hundred eighty-nine".