12417887 has 16 divisors (see below), whose sum is σ = 13977600. Its totient is φ = 10977120.

The previous prime is 12417859. The next prime is 12417893. The reversal of 12417887 is 78871421.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12417887 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12417887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12417187) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16718 + ... + 17444.

It is an arithmetic number, because the mean of its divisors is an integer number (873600).

Almost surely, 2^12417887 is an apocalyptic number.

12417887 is a deficient number, since it is larger than the sum of its proper divisors (1559713).

12417887 is a wasteful number, since it uses less digits than its factorization.

12417887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806.

The product of its digits is 25088, while the sum is 38.

The square root of 12417887 is about 3523.9022404147. The cubic root of 12417887 is about 231.5701451390.

The spelling of 12417887 in words is "twelve million, four hundred seventeen thousand, eight hundred eighty-seven".