12004947 has 6 divisors (see below), whose sum is σ = 17340492. Its totient is φ = 8003292.

The previous prime is 12004921. The next prime is 12004957. The reversal of 12004947 is 74940021.

It is a happy number.

It is not a de Polignac number, because 12004947 - 2¹² = 12000851 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12004947.

It is not an unprimeable number, because it can be changed into a prime (12004957) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 666933 + ... + 666950.

It is an arithmetic number, because the mean of its divisors is an integer number (2890082).

Almost surely, 2^12004947 is an apocalyptic number.

12004947 is a deficient number, since it is larger than the sum of its proper divisors (5335545).

12004947 is a wasteful number, since it uses less digits than its factorization.

12004947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1333889 (or 1333886 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 12004947 is about 3464.8155795078. The cubic root of 12004947 is about 228.9743047516.

Adding to 12004947 its reverse (74940021), we get a palindrome (86944968).

The spelling of 12004947 in words is "twelve million, four thousand, nine hundred forty-seven".