115711949 has 2 divisors, whose sum is σ = 115711950. Its totient is φ = 115711948.

The previous prime is 115711931. The next prime is 115711961. The reversal of 115711949 is 949117511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70728100 + 44983849 = 8410^2 + 6707^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115711949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115711049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57855974 + 57855975.

It is an arithmetic number, because the mean of its divisors is an integer number (57855975).

Almost surely, 2^115711949 is an apocalyptic number.

It is an amenable number.

115711949 is a deficient number, since it is larger than the sum of its proper divisors (1).

115711949 is an equidigital number, since it uses as much as digits as its factorization.

115711949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11340, while the sum is 38.

The square root of 115711949 is about 10756.9488703814. The cubic root of 115711949 is about 487.2958763218.

The spelling of 115711949 in words is "one hundred fifteen million, seven hundred eleven thousand, nine hundred forty-nine".