12446987 has 4 divisors (see below), whose sum is σ = 14225136. Its totient is φ = 10668840.

The previous prime is 12446947. The next prime is 12446999. The reversal of 12446987 is 78964421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78964421 = 3121 ⋅25301.

It is not a de Polignac number, because 12446987 - 2⁶ = 12446923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12446947) 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, 889064 + ... + 889077.

It is an arithmetic number, because the mean of its divisors is an integer number (3556284).

Almost surely, 2^12446987 is an apocalyptic number.

12446987 is a deficient number, since it is larger than the sum of its proper divisors (1778149).

12446987 is an equidigital number, since it uses as much as digits as its factorization.

12446987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1778148.

The product of its digits is 96768, while the sum is 41.

The square root of 12446987 is about 3528.0287697240. The cubic root of 12446987 is about 231.7508907109.

The spelling of 12446987 in words is "twelve million, four hundred forty-six thousand, nine hundred eighty-seven".