12992147 has 4 divisors (see below), whose sum is σ = 14848176. Its totient is φ = 11136120.

The previous prime is 12992141. The next prime is 12992153. The reversal of 12992147 is 74129921.

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

It is an interprime number because it is at equal distance from previous prime (12992141) and next prime (12992153).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12992147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12992141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 928004 + ... + 928017.

It is an arithmetic number, because the mean of its divisors is an integer number (3712044).

Almost surely, 2^12992147 is an apocalyptic number.

12992147 is a deficient number, since it is larger than the sum of its proper divisors (1856029).

12992147 is an equidigital number, since it uses as much as digits as its factorization.

12992147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1856028.

The product of its digits is 9072, while the sum is 35.

The square root of 12992147 is about 3604.4620957918. The cubic root of 12992147 is about 235.0861130012.

The spelling of 12992147 in words is "twelve million, nine hundred ninety-two thousand, one hundred forty-seven".