82439637 has 16 divisors (see below), whose sum is σ = 126615552. Its totient is φ = 46735920.

The previous prime is 82439629. The next prime is 82439639. The reversal of 82439637 is 73693428.

It is not a de Polignac number, because 82439637 - 2³ = 82439629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82439639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12789 + ... + 18122.

It is an arithmetic number, because the mean of its divisors is an integer number (7913472).

Almost surely, 2^82439637 is an apocalyptic number.

It is an amenable number.

82439637 is a deficient number, since it is larger than the sum of its proper divisors (44175915).

82439637 is a wasteful number, since it uses less digits than its factorization.

82439637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31048.

The product of its digits is 217728, while the sum is 42.

The square root of 82439637 is about 9079.6275804683. The cubic root of 82439637 is about 435.2231857742.

The spelling of 82439637 in words is "eighty-two million, four hundred thirty-nine thousand, six hundred thirty-seven".