12974187 has 4 divisors (see below), whose sum is σ = 17298920. Its totient is φ = 8649456.

The previous prime is 12974177. The next prime is 12974233. The reversal of 12974187 is 78147921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78147921 = 3 ⋅26049307.

It is not a de Polignac number, because 12974187 - 2⁸ = 12973931 is a prime.

It is a super-3 number, since 3×12974187³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12974147) 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, 2162362 + ... + 2162367.

It is an arithmetic number, because the mean of its divisors is an integer number (4324730).

Almost surely, 2^12974187 is an apocalyptic number.

12974187 is a deficient number, since it is larger than the sum of its proper divisors (4324733).

12974187 is an equidigital number, since it uses as much as digits as its factorization.

12974187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4324732.

The product of its digits is 28224, while the sum is 39.

The square root of 12974187 is about 3601.9698777197. The cubic root of 12974187 is about 234.9777374414.

The spelling of 12974187 in words is "twelve million, nine hundred seventy-four thousand, one hundred eighty-seven".