12146997 has 8 divisors (see below), whose sum is σ = 16268256. Its totient is φ = 8061872.

The previous prime is 12146983. The next prime is 12146999. The reversal of 12146997 is 79964121.

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 12146997 - 2⁸ = 12146741 is a prime.

It is a super-2 number, since 2×12146997² = 295099072236018, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12146999) 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 7 ways as a sum of consecutive naturals, for example, 8238 + ... + 9599.

It is an arithmetic number, because the mean of its divisors is an integer number (2033532).

Almost surely, 2^12146997 is an apocalyptic number.

It is an amenable number.

12146997 is a deficient number, since it is larger than the sum of its proper divisors (4121259).

12146997 is a wasteful number, since it uses less digits than its factorization.

12146997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18067.

The product of its digits is 27216, while the sum is 39.

The square root of 12146997 is about 3485.2542231522. The cubic root of 12146997 is about 229.8738880157.

The spelling of 12146997 in words is "twelve million, one hundred forty-six thousand, nine hundred ninety-seven".