12291966 has 16 divisors (see below), whose sum is σ = 27315600. Its totient is φ = 4097304.

The previous prime is 12291941. The next prime is 12291967. The reversal of 12291966 is 66919221.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 12291966.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12291967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113761 + ... + 113868.

It is an arithmetic number, because the mean of its divisors is an integer number (1707225).

Almost surely, 2^12291966 is an apocalyptic number.

12291966 is an abundant number, since it is smaller than the sum of its proper divisors (15023634).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12291966 is a wasteful number, since it uses less digits than its factorization.

12291966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227640 (or 227634 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 12291966 is about 3505.9900170993. The cubic root of 12291966 is about 230.7847548018.

The spelling of 12291966 in words is "twelve million, two hundred ninety-one thousand, nine hundred sixty-six".