5979721 has 4 divisors (see below), whose sum is σ = 6523344. Its totient is φ = 5436100.

The previous prime is 5979707. The next prime is 5979731. The reversal of 5979721 is 1279795.

5979721 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5979721 - 2⁵ = 5979689 is a prime.

It is a Duffinian number.

5979721 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5979731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 271795 + ... + 271816.

It is an arithmetic number, because the mean of its divisors is an integer number (1630836).

Almost surely, 2^5979721 is an apocalyptic number.

It is an amenable number.

5979721 is a deficient number, since it is larger than the sum of its proper divisors (543623).

5979721 is a wasteful number, since it uses less digits than its factorization.

5979721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543622.

The product of its digits is 39690, while the sum is 40.

The square root of 5979721 is about 2445.3468056699. The cubic root of 5979721 is about 181.5071093857.

The spelling of 5979721 in words is "five million, nine hundred seventy-nine thousand, seven hundred twenty-one".