3139879 has 4 divisors (see below), whose sum is σ = 3199176. Its totient is φ = 3080584.

The previous prime is 3139867. The next prime is 3139889. The reversal of 3139879 is 9789313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9789313 = 19 ⋅515227.

It is a cyclic number.

It is not a de Polignac number, because 3139879 - 2⁵ = 3139847 is a prime.

It is an Ulam number.

It is a Duffinian number.

3139879 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3139889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29569 + ... + 29674.

It is an arithmetic number, because the mean of its divisors is an integer number (799794).

Almost surely, 2^3139879 is an apocalyptic number.

3139879 is a deficient number, since it is larger than the sum of its proper divisors (59297).

3139879 is an equidigital number, since it uses as much as digits as its factorization.

3139879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59296.

The product of its digits is 40824, while the sum is 40.

The square root of 3139879 is about 1771.9703722128. The cubic root of 3139879 is about 146.4325540743.

The spelling of 3139879 in words is "three million, one hundred thirty-nine thousand, eight hundred seventy-nine".