39682979 has 4 divisors (see below), whose sum is σ = 45351984. Its totient is φ = 34013976.

The previous prime is 39682969. The next prime is 39682997. The reversal of 39682979 is 97928693.

39682979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97928693 = 1777 ⋅55109.

It is a cyclic number.

It is not a de Polignac number, because 39682979 - 2¹² = 39678883 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 39682979.

It is not an unprimeable number, because it can be changed into a prime (39682919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2834492 + ... + 2834505.

It is an arithmetic number, because the mean of its divisors is an integer number (11337996).

Almost surely, 2^39682979 is an apocalyptic number.

39682979 is a deficient number, since it is larger than the sum of its proper divisors (5669005).

39682979 is an equidigital number, since it uses as much as digits as its factorization.

39682979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5669004.

The product of its digits is 1469664, while the sum is 53.

The square root of 39682979 is about 6299.4427531330. The cubic root of 39682979 is about 341.0892947324.

The spelling of 39682979 in words is "thirty-nine million, six hundred eighty-two thousand, nine hundred seventy-nine".