117257393 has 4 divisors (see below), whose sum is σ = 127917168. Its totient is φ = 106597620.

The previous prime is 117257333. The next prime is 117257401. The reversal of 117257393 is 393752711.

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, and also an emirpimes, since its reverse is a distinct semiprime: 393752711 = 11 ⋅35795701.

It is a cyclic number.

It is not a de Polignac number, because 117257393 - 2⁸ = 117257137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117257323) 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, 5329871 + ... + 5329892.

It is an arithmetic number, because the mean of its divisors is an integer number (31979292).

Almost surely, 2^117257393 is an apocalyptic number.

It is an amenable number.

117257393 is a deficient number, since it is larger than the sum of its proper divisors (10659775).

117257393 is a wasteful number, since it uses less digits than its factorization.

117257393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10659774.

The product of its digits is 39690, while the sum is 38.

The square root of 117257393 is about 10828.5452854943. The cubic root of 117257393 is about 489.4557235778.

The spelling of 117257393 in words is "one hundred seventeen million, two hundred fifty-seven thousand, three hundred ninety-three".