12239144 has 8 divisors (see below), whose sum is σ = 22948410. Its totient is φ = 6119568.

The previous prime is 12239093. The next prime is 12239147. The reversal of 12239144 is 44193221.

It can be written as a sum of positive squares in only one way, i.e., 7086244 + 5152900 = 2662^2 + 2270^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (12239147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 764939 + ... + 764954.

Almost surely, 2^12239144 is an apocalyptic number.

It is an amenable number.

12239144 is a deficient number, since it is larger than the sum of its proper divisors (10709266).

12239144 is a wasteful number, since it uses less digits than its factorization.

12239144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1529899 (or 1529895 counting only the distinct ones).

The product of its digits is 1728, while the sum is 26.

The square root of 12239144 is about 3498.4487991108. The cubic root of 12239144 is about 230.4536980196.

The spelling of 12239144 in words is "twelve million, two hundred thirty-nine thousand, one hundred forty-four".