12889957 has 2 divisors, whose sum is σ = 12889958. Its totient is φ = 12889956.

The previous prime is 12889951. The next prime is 12889963. The reversal of 12889957 is 75998821.

It is a balanced prime because it is at equal distance from previous prime (12889951) and next prime (12889963).

It can be written as a sum of positive squares in only one way, i.e., 11329956 + 1560001 = 3366^2 + 1249^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12889957 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12889957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12889951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6444978 + 6444979.

It is an arithmetic number, because the mean of its divisors is an integer number (6444979).

Almost surely, 2^12889957 is an apocalyptic number.

It is an amenable number.

12889957 is a deficient number, since it is larger than the sum of its proper divisors (1).

12889957 is an equidigital number, since it uses as much as digits as its factorization.

12889957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 49.

The square root of 12889957 is about 3590.2586257817. The cubic root of 12889957 is about 234.4681316874.

The spelling of 12889957 in words is "twelve million, eight hundred eighty-nine thousand, nine hundred fifty-seven".