82347839 has 8 divisors (see below), whose sum is σ = 94167168. Its totient is φ = 70542360.

The previous prime is 82347833. The next prime is 82347877. The reversal of 82347839 is 93874328.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 82347839 - 2¹² = 82343743 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 82347839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82347833) 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, 19124 + ... + 23030.

It is an arithmetic number, because the mean of its divisors is an integer number (11770896).

Almost surely, 2^82347839 is an apocalyptic number.

82347839 is a deficient number, since it is larger than the sum of its proper divisors (11819329).

82347839 is a wasteful number, since it uses less digits than its factorization.

82347839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6925.

The product of its digits is 290304, while the sum is 44.

The square root of 82347839 is about 9074.5710091442. The cubic root of 82347839 is about 435.0615828610.

The spelling of 82347839 in words is "eighty-two million, three hundred forty-seven thousand, eight hundred thirty-nine".