5649969 has 16 divisors (see below), whose sum is σ = 8157632. Its totient is φ = 3457728.

The previous prime is 5649953. The next prime is 5649977. The reversal of 5649969 is 9699465.

It is a happy number.

It is not a de Polignac number, because 5649969 - 2⁴ = 5649953 is a prime.

It is a super-2 number, since 2×5649969² = 63844299401922, which contains 22 as substring.

It is a Duffinian number.

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 15 ways as a sum of consecutive naturals, for example, 10542 + ... + 11064.

It is an arithmetic number, because the mean of its divisors is an integer number (509852).

Almost surely, 2^5649969 is an apocalyptic number.

It is an amenable number.

5649969 is a deficient number, since it is larger than the sum of its proper divisors (2507663).

5649969 is a wasteful number, since it uses less digits than its factorization.

5649969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816.

The product of its digits is 524880, while the sum is 48.

The square root of 5649969 is about 2376.9663438930. The cubic root of 5649969 is about 178.1074236889.

The spelling of 5649969 in words is "five million, six hundred forty-nine thousand, nine hundred sixty-nine".