12206239 has 4 divisors (see below), whose sum is σ = 12320424. Its totient is φ = 12092056.

The previous prime is 12206209. The next prime is 12206269. The reversal of 12206239 is 93260221.

It is a happy number.

12206239 is digitally balanced in base 2, 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: 93260221 = 7703 ⋅12107.

It is an interprime number because it is at equal distance from previous prime (12206209) and next prime (12206269).

It is a cyclic number.

It is not a de Polignac number, because 12206239 - 2²¹ = 10109087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12206209) 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, 56932 + ... + 57145.

It is an arithmetic number, because the mean of its divisors is an integer number (3080106).

Almost surely, 2^12206239 is an apocalyptic number.

12206239 is a deficient number, since it is larger than the sum of its proper divisors (114185).

12206239 is a wasteful number, since it uses less digits than its factorization.

12206239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114184.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 12206239 is about 3493.7428354130. The cubic root of 12206239 is about 230.2469873537.

The spelling of 12206239 in words is "twelve million, two hundred six thousand, two hundred thirty-nine".