12189435 has 16 divisors (see below), whose sum is σ = 19574016. Its totient is φ = 6477408.

The previous prime is 12189371. The next prime is 12189439. The reversal of 12189435 is 53498121.

12189435 = T₁₁₄ + T₁₁₅ + ... + T₄₂₀.

It is not a de Polignac number, because 12189435 - 2⁶ = 12189371 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12189396 and 12189405.

It is not an unprimeable number, because it can be changed into a prime (12189439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3282 + ... + 5928.

It is an arithmetic number, because the mean of its divisors is an integer number (1223376).

Almost surely, 2^12189435 is an apocalyptic number.

12189435 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12189435 is a deficient number, since it is larger than the sum of its proper divisors (7384581).

12189435 is a wasteful number, since it uses less digits than its factorization.

12189435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2962.

The product of its digits is 8640, while the sum is 33.

The square root of 12189435 is about 3491.3371363992. The cubic root of 12189435 is about 230.1412805586.

The spelling of 12189435 in words is "twelve million, one hundred eighty-nine thousand, four hundred thirty-five".