117044639 has 4 divisors (see below), whose sum is σ = 117132000. Its totient is φ = 116957280.

The previous prime is 117044633. The next prime is 117044659. The reversal of 117044639 is 936440711.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117044639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 117044599 and 117044608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117044633) 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, 41639 + ... + 44360.

It is an arithmetic number, because the mean of its divisors is an integer number (29283000).

Almost surely, 2^117044639 is an apocalyptic number.

117044639 is a deficient number, since it is larger than the sum of its proper divisors (87361).

117044639 is an equidigital number, since it uses as much as digits as its factorization.

117044639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87360.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 117044639 is about 10818.7170681186. The cubic root of 117044639 is about 489.1595184954.

The spelling of 117044639 in words is "one hundred seventeen million, forty-four thousand, six hundred thirty-nine".