82679389 has 8 divisors (see below), whose sum is σ = 89123832. Its totient is φ = 76247040.

The previous prime is 82679369. The next prime is 82679419. The reversal of 82679389 is 98397628.

It can be written as a sum of positive squares in 4 ways, for example, as 7562500 + 75116889 = 2750^2 + 8667^2 .

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 82679389 - 2⁵ = 82679357 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 (82679369) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15357 + ... + 20029.

It is an arithmetic number, because the mean of its divisors is an integer number (11140479).

Almost surely, 2^82679389 is an apocalyptic number.

It is an amenable number.

82679389 is a deficient number, since it is larger than the sum of its proper divisors (6444443).

82679389 is a wasteful number, since it uses less digits than its factorization.

82679389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6047.

The product of its digits is 1306368, while the sum is 52.

The square root of 82679389 is about 9092.8207394625. The cubic root of 82679389 is about 435.6446846351.

The spelling of 82679389 in words is "eighty-two million, six hundred seventy-nine thousand, three hundred eighty-nine".