2939839 has 8 divisors (see below), whose sum is σ = 3391520. Its totient is φ = 2496096.

The previous prime is 2939821. The next prime is 2939869. The reversal of 2939839 is 9389392.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2939839 - 2¹¹ = 2937791 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2939795 and 2939804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2939869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1164 + ... + 2689.

It is an arithmetic number, because the mean of its divisors is an integer number (423940).

2^2939839 is an apocalyptic number.

2939839 is a deficient number, since it is larger than the sum of its proper divisors (451681).

2939839 is a wasteful number, since it uses less digits than its factorization.

2939839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3969.

The product of its digits is 104976, while the sum is 43.

The square root of 2939839 is about 1714.5958707521. The cubic root of 2939839 is about 143.2543600771.

The spelling of 2939839 in words is "two million, nine hundred thirty-nine thousand, eight hundred thirty-nine".