5649939 has 8 divisors (see below), whose sum is σ = 8370320. Its totient is φ = 3766608.

The previous prime is 5649913. The next prime is 5649949. The reversal of 5649939 is 9399465.

It is a happy number.

It is not a de Polignac number, because 5649939 - 2⁵ = 5649907 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5649894 and 5649903.

It is not an unprimeable number, because it can be changed into a prime (5649949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104602 + ... + 104655.

It is an arithmetic number, because the mean of its divisors is an integer number (1046290).

Almost surely, 2^5649939 is an apocalyptic number.

5649939 is a deficient number, since it is larger than the sum of its proper divisors (2720381).

5649939 is a wasteful number, since it uses less digits than its factorization.

5649939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209266 (or 209260 counting only the distinct ones).

The product of its digits is 262440, while the sum is 45.

The square root of 5649939 is about 2376.9600333199. The cubic root of 5649939 is about 178.1071084523.

The spelling of 5649939 in words is "five million, six hundred forty-nine thousand, nine hundred thirty-nine".