12989892 has 12 divisors (see below), whose sum is σ = 30309776. Its totient is φ = 4329960.

The previous prime is 12989881. The next prime is 12989897. The reversal of 12989892 is 29898921.

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

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (12989897) 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, 541234 + ... + 541257.

Almost surely, 2^12989892 is an apocalyptic number.

12989892 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12989892 is an abundant number, since it is smaller than the sum of its proper divisors (17319884).

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

12989892 is a wasteful number, since it uses less digits than its factorization.

12989892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1082498 (or 1082496 counting only the distinct ones).

The product of its digits is 186624, while the sum is 48.

The square root of 12989892 is about 3604.1492754879. The cubic root of 12989892 is about 235.0725111985.

The spelling of 12989892 in words is "twelve million, nine hundred eighty-nine thousand, eight hundred ninety-two".