2236439 has 4 divisors (see below), whose sum is σ = 2258256. Its totient is φ = 2214624.

The previous prime is 2236417. The next prime is 2236457. The reversal of 2236439 is 9346322.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2236439 - 2⁸ = 2236183 is a prime.

It is a d-powerful number, because it can be written as 2¹⁵ + 2²¹ + 3⁶ + 6⁶ + 4 + 3¹⁰ + 9² .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2236489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10754 + ... + 10959.

It is an arithmetic number, because the mean of its divisors is an integer number (564564).

2^2236439 is an apocalyptic number.

2236439 is a deficient number, since it is larger than the sum of its proper divisors (21817).

2236439 is a wasteful number, since it uses less digits than its factorization.

2236439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21816.

The product of its digits is 7776, while the sum is 29.

The square root of 2236439 is about 1495.4728349255. The cubic root of 2236439 is about 130.7732807103.

It can be divided in two parts, 2 and 236439, that multiplied together give a triangular number (472878 = T₉₇₂).

The spelling of 2236439 in words is "two million, two hundred thirty-six thousand, four hundred thirty-nine".