12189974 has 8 divisors (see below), whose sum is σ = 18490680. Its totient is φ = 6026416.

The previous prime is 12189959. The next prime is 12189979. The reversal of 12189974 is 47998121.

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

It is a super-2 number, since 2×12189974² = 297190932241352, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12189979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34064 + ... + 34419.

It is an arithmetic number, because the mean of its divisors is an integer number (2311335).

Almost surely, 2^12189974 is an apocalyptic number.

12189974 is a deficient number, since it is larger than the sum of its proper divisors (6300706).

12189974 is an equidigital number, since it uses as much as digits as its factorization.

12189974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68574.

The product of its digits is 36288, while the sum is 41.

The square root of 12189974 is about 3491.4143266018. The cubic root of 12189974 is about 230.1446726852.

The spelling of 12189974 in words is "twelve million, one hundred eighty-nine thousand, nine hundred seventy-four".