82439369 has 4 divisors (see below), whose sum is σ = 82945296. Its totient is φ = 81933444.

The previous prime is 82439351. The next prime is 82439377. The reversal of 82439369 is 96393428.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 82439369 - 2¹² = 82435273 is a prime.

It is a super-2 number, since 2×82439369² = 13592499122236322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82436369) 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, 252719 + ... + 253044.

It is an arithmetic number, because the mean of its divisors is an integer number (20736324).

Almost surely, 2^82439369 is an apocalyptic number.

It is an amenable number.

82439369 is a deficient number, since it is larger than the sum of its proper divisors (505927).

82439369 is a wasteful number, since it uses less digits than its factorization.

82439369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505926.

The product of its digits is 279936, while the sum is 44.

The square root of 82439369 is about 9079.6128221417. The cubic root of 82439369 is about 435.2227141566. Note that the first 3 decimals are identical.

The spelling of 82439369 in words is "eighty-two million, four hundred thirty-nine thousand, three hundred sixty-nine".