82398239 has 32 divisors (see below), whose sum is σ = 105878016. Its totient is φ = 62277120.

The previous prime is 82398221. The next prime is 82398241. The reversal of 82398239 is 93289328.

It is a cyclic number.

It is not a de Polignac number, because 82398239 - 2²⁰ = 81349663 is a prime.

It is a super-2 number, since 2×82398239² = 13578939580602242, which contains 22 as substring.

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 82398239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82398209) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 601379 + ... + 601515.

It is an arithmetic number, because the mean of its divisors is an integer number (3308688).

Almost surely, 2^82398239 is an apocalyptic number.

82398239 is a deficient number, since it is larger than the sum of its proper divisors (23479777).

82398239 is a wasteful number, since it uses less digits than its factorization.

82398239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335.

The product of its digits is 186624, while the sum is 44.

The square root of 82398239 is about 9077.3475751455. The cubic root of 82398239 is about 435.1503228213.

The spelling of 82398239 in words is "eighty-two million, three hundred ninety-eight thousand, two hundred thirty-nine".