12898387 has 4 divisors (see below), whose sum is σ = 13314496. Its totient is φ = 12482280.

The previous prime is 12898373. The next prime is 12898399. The reversal of 12898387 is 78389821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78389821 = 233 ⋅336437.

It is a cyclic number.

It is not a de Polignac number, because 12898387 - 2²³ = 4509779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12898307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208008 + ... + 208069.

It is an arithmetic number, because the mean of its divisors is an integer number (3328624).

Almost surely, 2^12898387 is an apocalyptic number.

12898387 is a deficient number, since it is larger than the sum of its proper divisors (416109).

12898387 is an equidigital number, since it uses as much as digits as its factorization.

12898387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416108.

The product of its digits is 193536, while the sum is 46.

The square root of 12898387 is about 3591.4324440256. The cubic root of 12898387 is about 234.5192344081.

The spelling of 12898387 in words is "twelve million, eight hundred ninety-eight thousand, three hundred eighty-seven".