12893381 has 4 divisors (see below), whose sum is σ = 13572000. Its totient is φ = 12214764.

The previous prime is 12893351. The next prime is 12893389. The reversal of 12893381 is 18339821.

12893381 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18339821 = 17 ⋅1078813.

It is a cyclic number.

It is not a de Polignac number, because 12893381 - 2¹⁸ = 12631237 is a prime.

It is a super-2 number, since 2×12893381² = 332478547222322, 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 (12893389) 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, 339281 + ... + 339318.

It is an arithmetic number, because the mean of its divisors is an integer number (3393000).

Almost surely, 2^12893381 is an apocalyptic number.

It is an amenable number.

12893381 is a deficient number, since it is larger than the sum of its proper divisors (678619).

12893381 is an equidigital number, since it uses as much as digits as its factorization.

12893381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678618.

The product of its digits is 10368, while the sum is 35.

The square root of 12893381 is about 3590.7354399900. The cubic root of 12893381 is about 234.4888906862.

The spelling of 12893381 in words is "twelve million, eight hundred ninety-three thousand, three hundred eighty-one".