12899868 has 12 divisors (see below), whose sum is σ = 30099720. Its totient is φ = 4299952.

The previous prime is 12899857. The next prime is 12899869. The reversal of 12899868 is 86899821.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 12899868.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12899869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 537483 + ... + 537506.

It is an arithmetic number, because the mean of its divisors is an integer number (2508310).

Almost surely, 2^12899868 is an apocalyptic number.

It is an amenable number.

12899868 is an abundant number, since it is smaller than the sum of its proper divisors (17199852).

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

12899868 is a wasteful number, since it uses less digits than its factorization.

12899868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1074996 (or 1074994 counting only the distinct ones).

The product of its digits is 497664, while the sum is 51.

The square root of 12899868 is about 3591.6386232471. The cubic root of 12899868 is about 234.5282099410.

The spelling of 12899868 in words is "twelve million, eight hundred ninety-nine thousand, eight hundred sixty-eight".