82040489 has 4 divisors (see below), whose sum is σ = 82251780. Its totient is φ = 81829200.

The previous prime is 82040417. The next prime is 82040501. The reversal of 82040489 is 98404028.

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

It can be written as a sum of positive squares in 2 ways, for example, as 30085225 + 51955264 = 5485^2 + 7208^2 .

It is a cyclic number.

It is not a de Polignac number, because 82040489 - 2¹² = 82036393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82040089) 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, 105062 + ... + 105839.

It is an arithmetic number, because the mean of its divisors is an integer number (20562945).

Almost surely, 2^82040489 is an apocalyptic number.

It is an amenable number.

82040489 is a deficient number, since it is larger than the sum of its proper divisors (211291).

82040489 is a wasteful number, since it uses less digits than its factorization.

82040489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211290.

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 82040489 is about 9057.6204932642. The cubic root of 82040489 is about 434.5196423846.

The spelling of 82040489 in words is "eighty-two million, forty thousand, four hundred eighty-nine".