12959864 has 8 divisors (see below), whose sum is σ = 24299760. Its totient is φ = 6479928.

The previous prime is 12959861. The next prime is 12959867. The reversal of 12959864 is 46895921.

It is an interprime number because it is at equal distance from previous prime (12959861) and next prime (12959867).

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12959861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 809984 + ... + 809999.

It is an arithmetic number, because the mean of its divisors is an integer number (3037470).

Almost surely, 2^12959864 is an apocalyptic number.

It is an amenable number.

12959864 is a deficient number, since it is larger than the sum of its proper divisors (11339896).

12959864 is a wasteful number, since it uses less digits than its factorization.

12959864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1619989 (or 1619985 counting only the distinct ones).

The product of its digits is 155520, while the sum is 44.

The square root of 12959864 is about 3599.9811110616. The cubic root of 12959864 is about 234.8912368284.

The spelling of 12959864 in words is "twelve million, nine hundred fifty-nine thousand, eight hundred sixty-four".