115239797 has 4 divisors (see below), whose sum is σ = 117129036. Its totient is φ = 113350560.

The previous prime is 115239779. The next prime is 115239811. The reversal of 115239797 is 797932511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 797932511 = 457 ⋅1746023.

It can be written as a sum of positive squares in 2 ways, for example, as 5597956 + 109641841 = 2366^2 + 10471^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115239797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115239737) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 944528 + ... + 944649.

It is an arithmetic number, because the mean of its divisors is an integer number (29282259).

Almost surely, 2^115239797 is an apocalyptic number.

It is an amenable number.

115239797 is a deficient number, since it is larger than the sum of its proper divisors (1889239).

115239797 is an equidigital number, since it uses as much as digits as its factorization.

115239797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1889238.

The product of its digits is 119070, while the sum is 44.

The square root of 115239797 is about 10734.9800651888. The cubic root of 115239797 is about 486.6321840729.

The spelling of 115239797 in words is "one hundred fifteen million, two hundred thirty-nine thousand, seven hundred ninety-seven".