239117940 has 96 divisors (see below), whose sum is σ = 747250560. Its totient is φ = 63479808.

The previous prime is 239117933. The next prime is 239117981. The reversal of 239117940 is 49711932.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 239117895 and 239117904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 137919 + ... + 139641.

It is an arithmetic number, because the mean of its divisors is an integer number (7783860).

Almost surely, 2^239117940 is an apocalyptic number.

239117940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 239117940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (373625280).

239117940 is an abundant number, since it is smaller than the sum of its proper divisors (508132620).

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

239117940 is a wasteful number, since it uses less digits than its factorization.

239117940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1998 (or 1990 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 239117940 is about 15463.4388154770. The cubic root of 239117940 is about 620.6842428455.

The spelling of 239117940 in words is "two hundred thirty-nine million, one hundred seventeen thousand, nine hundred forty".