12969864 has 24 divisors (see below), whose sum is σ = 35126910. Its totient is φ = 4323264.

The previous prime is 12969857. The next prime is 12969871. The reversal of 12969864 is 46896921.

It is a happy number.

12969864 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12969857) and next prime (12969871).

It can be written as a sum of positive squares in only one way, i.e., 7064964 + 5904900 = 2658^2 + 2430^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 89997 + ... + 90140.

Almost surely, 2^12969864 is an apocalyptic number.

It is an amenable number.

12969864 is an abundant number, since it is smaller than the sum of its proper divisors (22157046).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12969864 is a wasteful number, since it uses less digits than its factorization.

12969864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180149 (or 180142 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 12969864 is about 3601.3697394186. The cubic root of 12969864 is about 234.9516363428.

The spelling of 12969864 in words is "twelve million, nine hundred sixty-nine thousand, eight hundred sixty-four".