12487919 has 8 divisors (see below), whose sum is σ = 13114752. Its totient is φ = 11868120.

The previous prime is 12487901. The next prime is 12487927. The reversal of 12487919 is 91978421.

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 12487919 - 2²⁰ = 11439343 is a prime.

It is a super-2 number, since 2×12487919² = 311896241901122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12487949) 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, 2084 + ... + 5414.

It is an arithmetic number, because the mean of its divisors is an integer number (1639344).

Almost surely, 2^12487919 is an apocalyptic number.

12487919 is a deficient number, since it is larger than the sum of its proper divisors (626833).

12487919 is a wasteful number, since it uses less digits than its factorization.

12487919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3517.

The product of its digits is 36288, while the sum is 41.

The square root of 12487919 is about 3533.8249815179. The cubic root of 12487919 is about 232.0046508679.

The spelling of 12487919 in words is "twelve million, four hundred eighty-seven thousand, nine hundred nineteen".