39879 has 16 divisors (see below), whose sum is σ = 67840. Its totient is φ = 22680.

The previous prime is 39877. The next prime is 39883. The reversal of 39879 is 97893.

It is not a de Polignac number, because 39879 - 2¹ = 39877 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 (39877) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84 + ... + 294.

It is an arithmetic number, because the mean of its divisors is an integer number (4240).

2³⁹⁸⁷⁹ is an apocalyptic number.

39879 is a deficient number, since it is larger than the sum of its proper divisors (27961).

39879 is a wasteful number, since it uses less digits than its factorization.

39879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227 (or 221 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 39879 is about 199.6972708877. The cubic root of 39879 is about 34.1649995882.

The spelling of 39879 in words is "thirty-nine thousand, eight hundred seventy-nine".