12393723 has 4 divisors (see below), whose sum is σ = 16524968. Its totient is φ = 8262480.

The previous prime is 12393683. The next prime is 12393739. The reversal of 12393723 is 32739321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32739321 = 3 ⋅10913107.

It is not a de Polignac number, because 12393723 - 2⁶ = 12393659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12393743) 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, 2065618 + ... + 2065623.

It is an arithmetic number, because the mean of its divisors is an integer number (4131242).

Almost surely, 2^12393723 is an apocalyptic number.

12393723 is a deficient number, since it is larger than the sum of its proper divisors (4131245).

12393723 is an equidigital number, since it uses as much as digits as its factorization.

12393723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4131244.

The product of its digits is 6804, while the sum is 30.

The square root of 12393723 is about 3520.4719854020. The cubic root of 12393723 is about 231.4198432813.

The spelling of 12393723 in words is "twelve million, three hundred ninety-three thousand, seven hundred twenty-three".