82806239 has 4 divisors (see below), whose sum is σ = 85477440. Its totient is φ = 80135040.

The previous prime is 82806211. The next prime is 82806247. The reversal of 82806239 is 93260828.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 82806239 - 2¹² = 82802143 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 (82806209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1335554 + ... + 1335615.

It is an arithmetic number, because the mean of its divisors is an integer number (21369360).

Almost surely, 2^82806239 is an apocalyptic number.

82806239 is a deficient number, since it is larger than the sum of its proper divisors (2671201).

82806239 is a wasteful number, since it uses less digits than its factorization.

82806239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2671200.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 82806239 is about 9099.7933493019. The cubic root of 82806239 is about 435.8673652471.

The spelling of 82806239 in words is "eighty-two million, eight hundred six thousand, two hundred thirty-nine".