82979559 has 20 divisors (see below), whose sum is σ = 133493976. Its totient is φ = 51063696.

The previous prime is 82979557. The next prime is 82979569. The reversal of 82979559 is 95597928.

82979559 is a `hidden beast` number, since 82 + 9 + 7 + 9 + 559 = 666.

It is not a de Polignac number, because 82979559 - 2¹ = 82979557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82979557) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 38349 + ... + 40454.

Almost surely, 2^82979559 is an apocalyptic number.

82979559 is a deficient number, since it is larger than the sum of its proper divisors (50514417).

82979559 is a wasteful number, since it uses less digits than its factorization.

82979559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78828 (or 78819 counting only the distinct ones).

The product of its digits is 2041200, while the sum is 54.

The square root of 82979559 is about 9109.3116644453. The cubic root of 82979559 is about 436.1712549337.

It can be divided in two parts, 82979 and 559, that added together give a palindrome (83538).

The spelling of 82979559 in words is "eighty-two million, nine hundred seventy-nine thousand, five hundred fifty-nine".