12889963 has 2 divisors, whose sum is σ = 12889964. Its totient is φ = 12889962.

The previous prime is 12889957. The next prime is 12889967. The reversal of 12889963 is 36998821.

It is a strong prime.

It is an emirp because it is prime and its reverse (36998821) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12889963 is a prime.

It is a super-2 number, since 2×12889963² = 332302292282738, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12889967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6444981 + 6444982.

It is an arithmetic number, because the mean of its divisors is an integer number (6444982).

Almost surely, 2^12889963 is an apocalyptic number.

12889963 is a deficient number, since it is larger than the sum of its proper divisors (1).

12889963 is an equidigital number, since it uses as much as digits as its factorization.

12889963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 46.

The square root of 12889963 is about 3590.2594613760. The cubic root of 12889963 is about 234.4681680673.

The spelling of 12889963 in words is "twelve million, eight hundred eighty-nine thousand, nine hundred sixty-three".