12963487 has 4 divisors (see below), whose sum is σ = 13381696. Its totient is φ = 12545280.

The previous prime is 12963449. The next prime is 12963499. The reversal of 12963487 is 78436921.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12963487 - 2¹⁹ = 12439199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12963407) 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, 209058 + ... + 209119.

It is an arithmetic number, because the mean of its divisors is an integer number (3345424).

Almost surely, 2^12963487 is an apocalyptic number.

12963487 is a deficient number, since it is larger than the sum of its proper divisors (418209).

12963487 is an equidigital number, since it uses as much as digits as its factorization.

12963487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418208.

The product of its digits is 72576, while the sum is 40.

The square root of 12963487 is about 3600.4842729833. The cubic root of 12963487 is about 234.9131231605.

The spelling of 12963487 in words is "twelve million, nine hundred sixty-three thousand, four hundred eighty-seven".