12964381 has 2 divisors, whose sum is σ = 12964382. Its totient is φ = 12964380.

The previous prime is 12964321. The next prime is 12964397. The reversal of 12964381 is 18346921.

12964381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12425625 + 538756 = 3525^2 + 734^2 .

It is an emirp because it is prime and its reverse (18346921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12964381 - 2¹⁷ = 12833309 is a prime.

It is a super-2 number, since 2×12964381² = 336150349426322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12964321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6482190 + 6482191.

It is an arithmetic number, because the mean of its divisors is an integer number (6482191).

Almost surely, 2^12964381 is an apocalyptic number.

It is an amenable number.

12964381 is a deficient number, since it is larger than the sum of its proper divisors (1).

12964381 is an equidigital number, since it uses as much as digits as its factorization.

12964381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 34.

The square root of 12964381 is about 3600.6084208089. The cubic root of 12964381 is about 234.9185231351.

The spelling of 12964381 in words is "twelve million, nine hundred sixty-four thousand, three hundred eighty-one".