115861939 has 2 divisors, whose sum is σ = 115861940. Its totient is φ = 115861938.

The previous prime is 115861927. The next prime is 115862009. The reversal of 115861939 is 939168511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 115861939 - 2¹³ = 115853747 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 115861895 and 115861904.

It is not a weakly prime, because it can be changed into another prime (115861139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57930969 + 57930970.

It is an arithmetic number, because the mean of its divisors is an integer number (57930970).

Almost surely, 2^115861939 is an apocalyptic number.

115861939 is a deficient number, since it is larger than the sum of its proper divisors (1).

115861939 is an equidigital number, since it uses as much as digits as its factorization.

115861939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58320, while the sum is 43.

The square root of 115861939 is about 10763.9183850492. The cubic root of 115861939 is about 487.5063355740.

The spelling of 115861939 in words is "one hundred fifteen million, eight hundred sixty-one thousand, nine hundred thirty-nine".