115993397 has 8 divisors (see below), whose sum is σ = 132264216. Its totient is φ = 100772352.

The previous prime is 115993369. The next prime is 115993411. The reversal of 115993397 is 793399511.

It can be written as a sum of positive squares in 4 ways, for example, as 26615281 + 89378116 = 5159^2 + 9454^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115993397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115993337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 262208 + ... + 262649.

It is an arithmetic number, because the mean of its divisors is an integer number (16533027).

Almost surely, 2^115993397 is an apocalyptic number.

115993397 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

115993397 is a deficient number, since it is larger than the sum of its proper divisors (16270819).

115993397 is a wasteful number, since it uses less digits than its factorization.

115993397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524887.

The product of its digits is 229635, while the sum is 47.

The square root of 115993397 is about 10770.0230733272. The cubic root of 115993397 is about 487.6906422466.

The spelling of 115993397 in words is "one hundred fifteen million, nine hundred ninety-three thousand, three hundred ninety-seven".