12044139 has 4 divisors (see below), whose sum is σ = 16058856. Its totient is φ = 8029424.

The previous prime is 12044069. The next prime is 12044141. The reversal of 12044139 is 93144021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12044139 - 2¹¹ = 12042091 is a prime.

It is a super-2 number, since 2×12044139² = 290122568502642, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12044159) 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, 2007354 + ... + 2007359.

It is an arithmetic number, because the mean of its divisors is an integer number (4014714).

Almost surely, 2^12044139 is an apocalyptic number.

12044139 is a deficient number, since it is larger than the sum of its proper divisors (4014717).

12044139 is an equidigital number, since it uses as much as digits as its factorization.

12044139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4014716.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 12044139 is about 3470.4666833151. The cubic root of 12044139 is about 229.2232080578.

The spelling of 12044139 in words is "twelve million, forty-four thousand, one hundred thirty-nine".