268436239 has 4 divisors (see below), whose sum is σ = 284226624. Its totient is φ = 252645856.

The previous prime is 268436219. The next prime is 268436249. The reversal of 268436239 is 932634862.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-268436239 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 268436195 and 268436204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268436219) 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, 7895167 + ... + 7895200.

It is an arithmetic number, because the mean of its divisors is an integer number (71056656).

Almost surely, 2^268436239 is an apocalyptic number.

268436239 is a deficient number, since it is larger than the sum of its proper divisors (15790385).

268436239 is a wasteful number, since it uses less digits than its factorization.

268436239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15790384.

The product of its digits is 373248, while the sum is 43.

The square root of 268436239 is about 16384.0238952462. The cubic root of 268436239 is about 645.0802047569.

The spelling of 268436239 in words is "two hundred sixty-eight million, four hundred thirty-six thousand, two hundred thirty-nine".