12345444 has 18 divisors (see below), whose sum is σ = 31206630. Its totient is φ = 4115136.

The previous prime is 12345439. The next prime is 12345479. The reversal of 12345444 is 44454321.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11985444 + 360000 = 3462^2 + 600^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 171429 + ... + 171500.

Almost surely, 2^12345444 is an apocalyptic number.

It is an amenable number.

12345444 is an abundant number, since it is smaller than the sum of its proper divisors (18861186).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12345444 is a wasteful number, since it uses less digits than its factorization.

12345444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342939 (or 342934 counting only the distinct ones).

The product of its digits is 7680, while the sum is 27.

The square root of 12345444 is about 3513.6084016293. The cubic root of 12345444 is about 231.1189582381.

Adding to 12345444 its reverse (44454321), we get a palindrome (56799765).

The spelling of 12345444 in words is "twelve million, three hundred forty-five thousand, four hundred forty-four".