12189047 has 8 divisors (see below), whose sum is σ = 13198080. Its totient is φ = 11190240.

The previous prime is 12189043. The next prime is 12189053. The reversal of 12189047 is 74098121.

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

It is a cyclic number.

It is not a de Polignac number, because 12189047 - 2² = 12189043 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 (12189041) 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, 29 + ... + 4937.

It is an arithmetic number, because the mean of its divisors is an integer number (1649760).

Almost surely, 2^12189047 is an apocalyptic number.

12189047 is a deficient number, since it is larger than the sum of its proper divisors (1009033).

12189047 is a wasteful number, since it uses less digits than its factorization.

12189047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5113.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 12189047 is about 3491.2815698537. The cubic root of 12189047 is about 230.1388386689.

The spelling of 12189047 in words is "twelve million, one hundred eighty-nine thousand, forty-seven".