12887949 has 8 divisors (see below), whose sum is σ = 17202240. Its totient is φ = 8582816.

The previous prime is 12887933. The next prime is 12887993. The reversal of 12887949 is 94978821.

12887949 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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 12887949 - 2⁴ = 12887933 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12887898 and 12887907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12887449) 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, 2329 + ... + 5585.

It is an arithmetic number, because the mean of its divisors is an integer number (2150280).

Almost surely, 2^12887949 is an apocalyptic number.

It is an amenable number.

12887949 is a deficient number, since it is larger than the sum of its proper divisors (4314291).

12887949 is a wasteful number, since it uses less digits than its factorization.

12887949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4579.

The product of its digits is 290304, while the sum is 48.

The square root of 12887949 is about 3589.9789692977. The cubic root of 12887949 is about 234.4559558914.

The spelling of 12887949 in words is "twelve million, eight hundred eighty-seven thousand, nine hundred forty-nine".