12044639 has 2 divisors, whose sum is σ = 12044640. Its totient is φ = 12044638.

The previous prime is 12044623. The next prime is 12044671. The reversal of 12044639 is 93644021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12044639 - 2⁴ = 12044623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12044239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6022319 + 6022320.

It is an arithmetic number, because the mean of its divisors is an integer number (6022320).

Almost surely, 2^12044639 is an apocalyptic number.

12044639 is a deficient number, since it is larger than the sum of its proper divisors (1).

12044639 is an equidigital number, since it uses as much as digits as its factorization.

12044639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 12044639 is about 3470.5387189887. The cubic root of 12044639 is about 229.2263800022.

The spelling of 12044639 in words is "twelve million, forty-four thousand, six hundred thirty-nine".