117839973 has 4 divisors (see below), whose sum is σ = 157119968. Its totient is φ = 78559980.

The previous prime is 117839941. The next prime is 117839977. The reversal of 117839973 is 379938711.

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: 379938711 = 3 ⋅126646237.

It is not a de Polignac number, because 117839973 - 2⁵ = 117839941 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 (117839977) 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, 19639993 + ... + 19639998.

It is an arithmetic number, because the mean of its divisors is an integer number (39279992).

Almost surely, 2^117839973 is an apocalyptic number.

It is an amenable number.

117839973 is a deficient number, since it is larger than the sum of its proper divisors (39279995).

117839973 is an equidigital number, since it uses as much as digits as its factorization.

117839973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39279994.

The product of its digits is 285768, while the sum is 48.

The square root of 117839973 is about 10855.4121524703. The cubic root of 117839973 is about 490.2649864795.

The spelling of 117839973 in words is "one hundred seventeen million, eight hundred thirty-nine thousand, nine hundred seventy-three".