117919 has 4 divisors (see below), whose sum is σ = 121144. Its totient is φ = 114696.

The previous prime is 117917. The next prime is 117937. The reversal of 117919 is 919711.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 117919 - 2¹ = 117917 is a prime.

It is a super-2 number, since 2×117919² = 27809781122, 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 (117911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1557 + ... + 1630.

It is an arithmetic number, because the mean of its divisors is an integer number (30286).

2¹¹⁷⁹¹⁹ is an apocalyptic number.

117919 is a deficient number, since it is larger than the sum of its proper divisors (3225).

117919 is an equidigital number, since it uses as much as digits as its factorization.

117919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3224.

The product of its digits is 567, while the sum is 28.

The square root of 117919 is about 343.3933604483. The cubic root of 117919 is about 49.0374557429.

The spelling of 117919 in words is "one hundred seventeen thousand, nine hundred nineteen".