39479879 has 4 divisors (see below), whose sum is σ = 39501384. Its totient is φ = 39458376.

The previous prime is 39479861. The next prime is 39479903. The reversal of 39479879 is 97897493.

39479879 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.

It is a cyclic number.

It is not a de Polignac number, because 39479879 - 2⁸ = 39479623 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 (39479849) 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, 7712 + ... + 11765.

It is an arithmetic number, because the mean of its divisors is an integer number (9875346).

Almost surely, 2^39479879 is an apocalyptic number.

39479879 is a deficient number, since it is larger than the sum of its proper divisors (21505).

39479879 is a wasteful number, since it uses less digits than its factorization.

39479879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21504.

The product of its digits is 3429216, while the sum is 56.

The square root of 39479879 is about 6283.3016002735. The cubic root of 39479879 is about 340.5063936187.

The spelling of 39479879 in words is "thirty-nine million, four hundred seventy-nine thousand, eight hundred seventy-nine".