6244139 has 4 divisors (see below), whose sum is σ = 6811800. Its totient is φ = 5676480.

The previous prime is 6244099. The next prime is 6244153. The reversal of 6244139 is 9314426.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6244139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6244039) 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, 283814 + ... + 283835.

It is an arithmetic number, because the mean of its divisors is an integer number (1702950).

Almost surely, 2^6244139 is an apocalyptic number.

6244139 is a deficient number, since it is larger than the sum of its proper divisors (567661).

6244139 is a wasteful number, since it uses less digits than its factorization.

6244139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567660.

The product of its digits is 5184, while the sum is 29.

The square root of 6244139 is about 2498.8275250605. The cubic root of 6244139 is about 184.1439779679.

The spelling of 6244139 in words is "six million, two hundred forty-four thousand, one hundred thirty-nine".