12946987 has 2 divisors, whose sum is σ = 12946988. Its totient is φ = 12946986.

The previous prime is 12946951. The next prime is 12946991. The reversal of 12946987 is 78964921.

12946987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12946987 - 2⁷ = 12946859 is a prime.

It is not a weakly prime, because it can be changed into another prime (12946487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6473493 + 6473494.

It is an arithmetic number, because the mean of its divisors is an integer number (6473494).

Almost surely, 2^12946987 is an apocalyptic number.

12946987 is a deficient number, since it is larger than the sum of its proper divisors (1).

12946987 is an equidigital number, since it uses as much as digits as its factorization.

12946987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 46.

The square root of 12946987 is about 3598.1921849729. The cubic root of 12946987 is about 234.8134145921.

It can be divided in two parts, 1294 and 6987, that added together give a square (8281 = 91²).

The spelling of 12946987 in words is "twelve million, nine hundred forty-six thousand, nine hundred eighty-seven".