3979439 has 8 divisors (see below), whose sum is σ = 4142208. Its totient is φ = 3818880.

The previous prime is 3979433. The next prime is 3979463. The reversal of 3979439 is 9349793.

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 a de Polignac number, because none of the positive numbers 2^k-3979439 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3979439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3979433) 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, 3779 + ... + 4715.

It is an arithmetic number, because the mean of its divisors is an integer number (517776).

Almost surely, 2^3979439 is an apocalyptic number.

3979439 is a deficient number, since it is larger than the sum of its proper divisors (162769).

3979439 is a wasteful number, since it uses less digits than its factorization.

3979439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1105.

The product of its digits is 183708, while the sum is 44.

The square root of 3979439 is about 1994.8531274257. The cubic root of 3979439 is about 158.4676498908.

The spelling of 3979439 in words is "three million, nine hundred seventy-nine thousand, four hundred thirty-nine".