115138799 has 4 divisors (see below), whose sum is σ = 115845336. Its totient is φ = 114432264.

The previous prime is 115138789. The next prime is 115138819. The reversal of 115138799 is 997831511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 997831511 = 4049 ⋅246439.

It is a cyclic number.

It is not a de Polignac number, because 115138799 - 2¹² = 115134703 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 (115138789) 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 3 ways as a sum of consecutive naturals, for example, 353024 + ... + 353349.

It is an arithmetic number, because the mean of its divisors is an integer number (28961334).

Almost surely, 2^115138799 is an apocalyptic number.

115138799 is a deficient number, since it is larger than the sum of its proper divisors (706537).

115138799 is an equidigital number, since it uses as much as digits as its factorization.

115138799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706536.

The product of its digits is 68040, while the sum is 44.

The square root of 115138799 is about 10730.2748799833. The cubic root of 115138799 is about 486.4899784464.

The spelling of 115138799 in words is "one hundred fifteen million, one hundred thirty-eight thousand, seven hundred ninety-nine".