12289433 has 4 divisors (see below), whose sum is σ = 13234788. Its totient is φ = 11344080.

The previous prime is 12289427. The next prime is 12289441. The reversal of 12289433 is 33498221.

It is a happy number.

12289433 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33498221 = 1031 ⋅32491.

It can be written as a sum of positive squares in 2 ways, for example, as 7912969 + 4376464 = 2813^2 + 2092^2 .

It is a cyclic number.

It is not a de Polignac number, because 12289433 - 2⁶ = 12289369 is a prime.

It is a super-2 number, since 2×12289433² = 302060326922978, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12289433.

It is not an unprimeable number, because it can be changed into a prime (12289493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 472658 + ... + 472683.

It is an arithmetic number, because the mean of its divisors is an integer number (3308697).

Almost surely, 2^12289433 is an apocalyptic number.

12289433 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12289433 is a deficient number, since it is larger than the sum of its proper divisors (945355).

12289433 is an equidigital number, since it uses as much as digits as its factorization.

12289433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945354.

The product of its digits is 10368, while the sum is 32.

The square root of 12289433 is about 3505.6287595808. The cubic root of 12289433 is about 230.7689011420.

The spelling of 12289433 in words is "twelve million, two hundred eighty-nine thousand, four hundred thirty-three".