12493987 has 8 divisors (see below), whose sum is σ = 13668912. Its totient is φ = 11325600.

The previous prime is 12493973. The next prime is 12493993. The reversal of 12493987 is 78939421.

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

It is not a de Polignac number, because 12493987 - 2¹¹ = 12491939 is a prime.

It is a super-2 number, since 2×12493987² = 312199422312338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12493927) 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 7 ways as a sum of consecutive naturals, for example, 2937 + ... + 5797.

It is an arithmetic number, because the mean of its divisors is an integer number (1708614).

Almost surely, 2^12493987 is an apocalyptic number.

12493987 is a deficient number, since it is larger than the sum of its proper divisors (1174925).

12493987 is a wasteful number, since it uses less digits than its factorization.

12493987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3269.

The product of its digits is 108864, while the sum is 43.

The square root of 12493987 is about 3534.6834370280. The cubic root of 12493987 is about 232.0422225472.

The spelling of 12493987 in words is "twelve million, four hundred ninety-three thousand, nine hundred eighty-seven".