5643969 has 8 divisors (see below), whose sum is σ = 7921440. Its totient is φ = 3564576.

The previous prime is 5643961. The next prime is 5643973. The reversal of 5643969 is 9693465.

5643969 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5643969 - 2³ = 5643961 is a prime.

It is a super-2 number, since 2×5643969² = 63708772145922, which contains 22 as substring.

5643969 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 5643969.

It is not an unprimeable number, because it can be changed into a prime (5643961) 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, 49452 + ... + 49565.

It is an arithmetic number, because the mean of its divisors is an integer number (990180).

Almost surely, 2^5643969 is an apocalyptic number.

It is an amenable number.

5643969 is a deficient number, since it is larger than the sum of its proper divisors (2277471).

5643969 is a wasteful number, since it uses less digits than its factorization.

5643969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99039.

The product of its digits is 174960, while the sum is 42.

The square root of 5643969 is about 2375.7038956907. The cubic root of 5643969 is about 178.0443541365.

The spelling of 5643969 in words is "five million, six hundred forty-three thousand, nine hundred sixty-nine".