12044813 has 4 divisors (see below), whose sum is σ = 13139808. Its totient is φ = 10949820.

The previous prime is 12044797. The next prime is 12044839. The reversal of 12044813 is 31844021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31844021 = 11 ⋅2894911.

It is a cyclic number.

It is not a de Polignac number, because 12044813 - 2⁴ = 12044797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12044413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 547481 + ... + 547502.

It is an arithmetic number, because the mean of its divisors is an integer number (3284952).

Almost surely, 2^12044813 is an apocalyptic number.

It is an amenable number.

12044813 is a deficient number, since it is larger than the sum of its proper divisors (1094995).

12044813 is a wasteful number, since it uses less digits than its factorization.

12044813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1094994.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 12044813 is about 3470.5637870525. The cubic root of 12044813 is about 229.2274838183.

Adding to 12044813 its reverse (31844021), we get a palindrome (43888834).

It can be divided in two parts, 120 and 44813, that multiplied together give a triangular number (5377560 = T₃₂₇₉).

The spelling of 12044813 in words is "twelve million, forty-four thousand, eight hundred thirteen".