82939644 has 72 divisors (see below), whose sum is σ = 218600928. Its totient is φ = 26490240.

The previous prime is 82939639. The next prime is 82939691. The reversal of 82939644 is 44693928.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 82939644.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 94134 + ... + 95010.

It is an arithmetic number, because the mean of its divisors is an integer number (3036124).

Almost surely, 2^82939644 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 82939644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109300464).

82939644 is an abundant number, since it is smaller than the sum of its proper divisors (135661284).

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

82939644 is a wasteful number, since it uses less digits than its factorization.

82939644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 995 (or 990 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 82939644 is about 9107.1205108970. The cubic root of 82939644 is about 436.1013077158.

The spelling of 82939644 in words is "eighty-two million, nine hundred thirty-nine thousand, six hundred forty-four".