12290447 has 8 divisors (see below), whose sum is σ = 13559280. Its totient is φ = 11067840.

The previous prime is 12290437. The next prime is 12290459. The reversal of 12290447 is 74409221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12290447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12290417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10997 + ... + 12062.

It is an arithmetic number, because the mean of its divisors is an integer number (1694910).

Almost surely, 2^12290447 is an apocalyptic number.

12290447 is a deficient number, since it is larger than the sum of its proper divisors (1268833).

12290447 is a wasteful number, since it uses less digits than its factorization.

12290447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23113.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 12290447 is about 3505.7733811529. The cubic root of 12290447 is about 230.7752478744.

Adding to 12290447 its reverse (74409221), we get a palindrome (86699668).

The spelling of 12290447 in words is "twelve million, two hundred ninety thousand, four hundred forty-seven".