115747993 has 4 divisors (see below), whose sum is σ = 116514688. Its totient is φ = 114981300.

The previous prime is 115747969. The next prime is 115748011. The reversal of 115747993 is 399747511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 115747993 - 2¹³ = 115739801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115747193) 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, 383121 + ... + 383422.

It is an arithmetic number, because the mean of its divisors is an integer number (29128672).

Almost surely, 2^115747993 is an apocalyptic number.

It is an amenable number.

115747993 is a deficient number, since it is larger than the sum of its proper divisors (766695).

115747993 is an equidigital number, since it uses as much as digits as its factorization.

115747993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766694.

The product of its digits is 238140, while the sum is 46.

The square root of 115747993 is about 10758.6241220706. The cubic root of 115747993 is about 487.3464682422.

The spelling of 115747993 in words is "one hundred fifteen million, seven hundred forty-seven thousand, nine hundred ninety-three".