2159973 has 8 divisors (see below), whose sum is σ = 3200000. Its totient is φ = 1439964.

The previous prime is 2159959. The next prime is 2160001. The reversal of 2159973 is 3799512.

2159973 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2159973 - 2⁴ = 2159957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2159903) 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, 39973 + ... + 40026.

It is an arithmetic number, because the mean of its divisors is an integer number (400000).

2^2159973 is an apocalyptic number.

It is an amenable number.

2159973 is a deficient number, since it is larger than the sum of its proper divisors (1040027).

2159973 is an equidigital number, since it uses as much as digits as its factorization.

2159973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80008 (or 80002 counting only the distinct ones).

The product of its digits is 17010, while the sum is 36.

The square root of 2159973 is about 1469.6846600547. The cubic root of 2159973 is about 129.2655427910.

It can be divided in two parts, 215997 and 3, that added together give a cube (216000 = 60³).

The spelling of 2159973 in words is "two million, one hundred fifty-nine thousand, nine hundred seventy-three".