12057189 has 4 divisors (see below), whose sum is σ = 16076256. Its totient is φ = 8038124.

The previous prime is 12057187. The next prime is 12057193. The reversal of 12057189 is 98175021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12057189 - 2¹ = 12057187 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12057187) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2009529 + ... + 2009534.

It is an arithmetic number, because the mean of its divisors is an integer number (4019064).

Almost surely, 2^12057189 is an apocalyptic number.

It is an amenable number.

12057189 is a deficient number, since it is larger than the sum of its proper divisors (4019067).

12057189 is an equidigital number, since it uses as much as digits as its factorization.

12057189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4019066.

The product of its (nonzero) digits is 5040, while the sum is 33.

The square root of 12057189 is about 3472.3463248933. The cubic root of 12057189 is about 229.3059670695.

It can be divided in two parts, 12057 and 189, that added together give a triangular number (12246 = T₁₅₆).

The spelling of 12057189 in words is "twelve million, fifty-seven thousand, one hundred eighty-nine".