12889123 has 12 divisors (see below), whose sum is σ = 14230080. Its totient is φ = 11665056.

The previous prime is 12889109. The next prime is 12889133. The reversal of 12889123 is 32198821.

It is not a de Polignac number, because 12889123 - 2⁵ = 12889091 is a prime.

It is a super-2 number, since 2×12889123² = 332258983418258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12889133) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8238 + ... + 9676.

It is an arithmetic number, because the mean of its divisors is an integer number (1185840).

Almost surely, 2^12889123 is an apocalyptic number.

12889123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12889123 is a deficient number, since it is larger than the sum of its proper divisors (1340957).

12889123 is a wasteful number, since it uses less digits than its factorization.

12889123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1518 (or 1505 counting only the distinct ones).

The product of its digits is 6912, while the sum is 34.

The square root of 12889123 is about 3590.1424762814. The cubic root of 12889123 is about 234.4630747623.

The spelling of 12889123 in words is "twelve million, eight hundred eighty-nine thousand, one hundred twenty-three".