268746439 has 4 divisors (see below), whose sum is σ = 289419256. Its totient is φ = 248073624.

The previous prime is 268746427. The next prime is 268746449. The reversal of 268746439 is 934647862.

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-268746439 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 268746392 and 268746401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268746449) 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, 10336389 + ... + 10336414.

It is an arithmetic number, because the mean of its divisors is an integer number (72354814).

Almost surely, 2^268746439 is an apocalyptic number.

268746439 is a deficient number, since it is larger than the sum of its proper divisors (20672817).

268746439 is a wasteful number, since it uses less digits than its factorization.

268746439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20672816.

The product of its digits is 1741824, while the sum is 49.

The square root of 268746439 is about 16393.4877009134. The cubic root of 268746439 is about 645.3285900605.

The spelling of 268746439 in words is "two hundred sixty-eight million, seven hundred forty-six thousand, four hundred thirty-nine".