2159393 has 4 divisors (see below), whose sum is σ = 2163588. Its totient is φ = 2155200.

The previous prime is 2159383. The next prime is 2159419. The reversal of 2159393 is 3939512.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1281424 + 877969 = 1132^2 + 937^2 .

It is a cyclic number.

It is not a de Polignac number, because 2159393 - 2⁶ = 2159329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2159303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1196 + ... + 2397.

It is an arithmetic number, because the mean of its divisors is an integer number (540897).

2^2159393 is an apocalyptic number.

It is an amenable number.

2159393 is a deficient number, since it is larger than the sum of its proper divisors (4195).

2159393 is an equidigital number, since it uses as much as digits as its factorization.

2159393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4194.

The product of its digits is 7290, while the sum is 32.

The square root of 2159393 is about 1469.4873255663. The cubic root of 2159393 is about 129.2539715466.

It can be divided in two parts, 2159 and 393, that added together give a palindrome (2552).

The spelling of 2159393 in words is "two million, one hundred fifty-nine thousand, three hundred ninety-three".