3439739 has 4 divisors (see below), whose sum is σ = 3483360. Its totient is φ = 3396120.

The previous prime is 3439697. The next prime is 3439747. The reversal of 3439739 is 9379343.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9379343 = 509 ⋅18427.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3439739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3439339) 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, 21692 + ... + 21849.

It is an arithmetic number, because the mean of its divisors is an integer number (870840).

Almost surely, 2^3439739 is an apocalyptic number.

3439739 is a deficient number, since it is larger than the sum of its proper divisors (43621).

3439739 is an equidigital number, since it uses as much as digits as its factorization.

3439739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43620.

The product of its digits is 61236, while the sum is 38.

The square root of 3439739 is about 1854.6533368800. The cubic root of 3439739 is about 150.9530283852.

The spelling of 3439739 in words is "three million, four hundred thirty-nine thousand, seven hundred thirty-nine".