3920839 has 8 divisors (see below), whose sum is σ = 4262720. Its totient is φ = 3584736.

The previous prime is 3920797. The next prime is 3920843. The reversal of 3920839 is 9380293.

3920839 is nontrivially palindromic in base 9.

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 3920839 - 2¹³ = 3912647 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 (3920899) 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, 34 + ... + 2800.

It is an arithmetic number, because the mean of its divisors is an integer number (532840).

Almost surely, 2^3920839 is an apocalyptic number.

3920839 is a deficient number, since it is larger than the sum of its proper divisors (341881).

3920839 is a wasteful number, since it uses less digits than its factorization.

3920839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2889.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 3920839 is about 1980.1108554826. The cubic root of 3920839 is about 157.6859515307.

The spelling of 3920839 in words is "three million, nine hundred twenty thousand, eight hundred thirty-nine".