12936823 has 4 divisors (see below), whose sum is σ = 13180968. Its totient is φ = 12692680.

The previous prime is 12936817. The next prime is 12936857. The reversal of 12936823 is 32863921.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32863921 = 79 ⋅415999.

It is a cyclic number.

It is not a de Polignac number, because 12936823 - 2⁹ = 12936311 is a prime.

It is a super-2 number, since 2×12936823² = 334722778666658, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12936023) 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, 121993 + ... + 122098.

It is an arithmetic number, because the mean of its divisors is an integer number (3295242).

Almost surely, 2^12936823 is an apocalyptic number.

12936823 is a deficient number, since it is larger than the sum of its proper divisors (244145).

12936823 is an equidigital number, since it uses as much as digits as its factorization.

12936823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244144.

The product of its digits is 15552, while the sum is 34.

The square root of 12936823 is about 3596.7795317478. The cubic root of 12936823 is about 234.7519519429.

The spelling of 12936823 in words is "twelve million, nine hundred thirty-six thousand, eight hundred twenty-three".