3109739 has 4 divisors (see below), whose sum is σ = 3193824. Its totient is φ = 3025656.

The previous prime is 3109709. The next prime is 3109747. The reversal of 3109739 is 9379013.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9379013 = 7 ⋅1339859.

It is a cyclic number.

It is not a de Polignac number, because 3109739 - 2¹² = 3105643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3109709) 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, 41987 + ... + 42060.

It is an arithmetic number, because the mean of its divisors is an integer number (798456).

Almost surely, 2^3109739 is an apocalyptic number.

3109739 is a deficient number, since it is larger than the sum of its proper divisors (84085).

3109739 is an equidigital number, since it uses as much as digits as its factorization.

3109739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84084.

The product of its (nonzero) digits is 5103, while the sum is 32.

The square root of 3109739 is about 1763.4452075412. The cubic root of 3109739 is about 145.9625067921.

The spelling of 3109739 in words is "three million, one hundred nine thousand, seven hundred thirty-nine".