3439939 has 4 divisors (see below), whose sum is σ = 3478680. Its totient is φ = 3401200.

The previous prime is 3439937. The next prime is 3439987. The reversal of 3439939 is 9399343.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9399343 = 1607 ⋅5849.

It is a cyclic number.

It is not a de Polignac number, because 3439939 - 2¹ = 3439937 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3439937) 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, 19237 + ... + 19414.

It is an arithmetic number, because the mean of its divisors is an integer number (869670).

Almost surely, 2^3439939 is an apocalyptic number.

3439939 is a deficient number, since it is larger than the sum of its proper divisors (38741).

3439939 is an equidigital number, since it uses as much as digits as its factorization.

3439939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38740.

The product of its digits is 78732, while the sum is 40.

The square root of 3439939 is about 1854.7072545283. The cubic root of 3439939 is about 150.9559539968.

The spelling of 3439939 in words is "three million, four hundred thirty-nine thousand, nine hundred thirty-nine".