117839744 has 64 divisors (see below), whose sum is σ = 258508800. Its totient is φ = 53061120.

The previous prime is 117839717. The next prime is 117839747. The reversal of 117839744 is 447938711.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 117839695 and 117839704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117839747) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178487 + ... + 179145.

It is an arithmetic number, because the mean of its divisors is an integer number (4039200).

Almost surely, 2^117839744 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 117839744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129254400).

117839744 is an abundant number, since it is smaller than the sum of its proper divisors (140669056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

117839744 is a wasteful number, since it uses less digits than its factorization.

117839744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 811 (or 799 counting only the distinct ones).

The product of its digits is 169344, while the sum is 44.

The square root of 117839744 is about 10855.4016047312. The cubic root of 117839744 is about 490.2646688998.

The spelling of 117839744 in words is "one hundred seventeen million, eight hundred thirty-nine thousand, seven hundred forty-four".