117838927 has 4 divisors (see below), whose sum is σ = 117929056. Its totient is φ = 117748800.

The previous prime is 117838921. The next prime is 117838933. The reversal of 117838927 is 729838711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 729838711 = 7 ⋅104262673.

It is an interprime number because it is at equal distance from previous prime (117838921) and next prime (117838933).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117838927 is a prime.

It is a super-2 number, since 2×117838927² = 27772025433022658, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117838921) 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, 43074 + ... + 45727.

It is an arithmetic number, because the mean of its divisors is an integer number (29482264).

Almost surely, 2^117838927 is an apocalyptic number.

117838927 is a deficient number, since it is larger than the sum of its proper divisors (90129).

117838927 is an equidigital number, since it uses as much as digits as its factorization.

117838927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90128.

The product of its digits is 169344, while the sum is 46.

The square root of 117838927 is about 10855.3639736307. The cubic root of 117838927 is about 490.2635358719.

The spelling of 117838927 in words is "one hundred seventeen million, eight hundred thirty-eight thousand, nine hundred twenty-seven".