12973987 has 8 divisors (see below), whose sum is σ = 14021280. Its totient is φ = 11933760.

The previous prime is 12973981. The next prime is 12974011. The reversal of 12973987 is 78937921.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12973987 - 2¹⁵ = 12941219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12973981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2439 + ... + 5647.

It is an arithmetic number, because the mean of its divisors is an integer number (1752660).

Almost surely, 2^12973987 is an apocalyptic number.

12973987 is a deficient number, since it is larger than the sum of its proper divisors (1047293).

12973987 is a wasteful number, since it uses less digits than its factorization.

12973987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3533.

The product of its digits is 190512, while the sum is 46.

The square root of 12973987 is about 3601.9421150263. The cubic root of 12973987 is about 234.9765300237.

The spelling of 12973987 in words is "twelve million, nine hundred seventy-three thousand, nine hundred eighty-seven".