3122639 has 4 divisors (see below), whose sum is σ = 3362856. Its totient is φ = 2882424.

The previous prime is 3122627. The next prime is 3122657. The reversal of 3122639 is 9362213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9362213 = 7 ⋅1337459.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3122639 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3122939) 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, 120089 + ... + 120114.

It is an arithmetic number, because the mean of its divisors is an integer number (840714).

Almost surely, 2^3122639 is an apocalyptic number.

3122639 is a deficient number, since it is larger than the sum of its proper divisors (240217).

3122639 is a wasteful number, since it uses less digits than its factorization.

3122639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240216.

The product of its digits is 1944, while the sum is 26.

The square root of 3122639 is about 1767.0990351421. The cubic root of 3122639 is about 146.1640584028.

The spelling of 3122639 in words is "three million, one hundred twenty-two thousand, six hundred thirty-nine".