2123393 has 4 divisors (see below), whose sum is σ = 2180820. Its totient is φ = 2065968.

The previous prime is 2123377. The next prime is 2123411. The reversal of 2123393 is 3933212.

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 1723969 + 399424 = 1313^2 + 632^2 .

It is a cyclic number.

It is not a de Polignac number, because 2123393 - 2⁴ = 2123377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2123353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28658 + ... + 28731.

It is an arithmetic number, because the mean of its divisors is an integer number (545205).

2^2123393 is an apocalyptic number.

It is an amenable number.

2123393 is a deficient number, since it is larger than the sum of its proper divisors (57427).

2123393 is an equidigital number, since it uses as much as digits as its factorization.

2123393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57426.

The product of its digits is 972, while the sum is 23.

The square root of 2123393 is about 1457.1866730107. The cubic root of 2123393 is about 128.5316631286.

The spelling of 2123393 in words is "two million, one hundred twenty-three thousand, three hundred ninety-three".