12983887 has 16 divisors (see below), whose sum is σ = 15344640. Its totient is φ = 10756512.

The previous prime is 12983879. The next prime is 12983899. The reversal of 12983887 is 78838921.

It is a cyclic number.

It is not a de Polignac number, because 12983887 - 2³ = 12983879 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 (12983837) 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 15 ways as a sum of consecutive naturals, for example, 29088 + ... + 29530.

It is an arithmetic number, because the mean of its divisors is an integer number (959040).

Almost surely, 2^12983887 is an apocalyptic number.

12983887 is a deficient number, since it is larger than the sum of its proper divisors (2360753).

12983887 is an equidigital number, since it uses as much as digits as its factorization.

12983887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582.

The product of its digits is 193536, while the sum is 46.

The square root of 12983887 is about 3603.3161115839. The cubic root of 12983887 is about 235.0362823111.

It can be divided in two parts, 1298388 and 7, that multiplied together give a triangular number (9088716 = T₄₂₆₃).

The spelling of 12983887 in words is "twelve million, nine hundred eighty-three thousand, eight hundred eighty-seven".