82321439 has 8 divisors (see below), whose sum is σ = 86312832. Its totient is φ = 78364440.

The previous prime is 82321427. The next prime is 82321441. The reversal of 82321439 is 93412328.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 82321439 - 2¹² = 82317343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82321409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3629 + ... + 13334.

It is an arithmetic number, because the mean of its divisors is an integer number (10789104).

Almost surely, 2^82321439 is an apocalyptic number.

82321439 is a deficient number, since it is larger than the sum of its proper divisors (3991393).

82321439 is a wasteful number, since it uses less digits than its factorization.

82321439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17197.

The product of its digits is 10368, while the sum is 32.

The square root of 82321439 is about 9073.1162783247. The cubic root of 82321439 is about 435.0150855736.

The spelling of 82321439 in words is "eighty-two million, three hundred twenty-one thousand, four hundred thirty-nine".