5649839 has 12 divisors (see below), whose sum is σ = 6197112. Its totient is φ = 5148000.

The previous prime is 5649829. The next prime is 5649851. The reversal of 5649839 is 9389465.

It is not a de Polignac number, because 5649839 - 2¹⁶ = 5584303 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5649839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5649829) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16904 + ... + 17234.

It is an arithmetic number, because the mean of its divisors is an integer number (516426).

Almost surely, 2^5649839 is an apocalyptic number.

5649839 is a deficient number, since it is larger than the sum of its proper divisors (547273).

5649839 is a wasteful number, since it uses less digits than its factorization.

5649839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458 (or 445 counting only the distinct ones).

The product of its digits is 233280, while the sum is 44.

The square root of 5649839 is about 2376.9389979551. The cubic root of 5649839 is about 178.1060576553.

The spelling of 5649839 in words is "five million, six hundred forty-nine thousand, eight hundred thirty-nine".