268849639 has 8 divisors (see below), whose sum is σ = 292129280. Its totient is φ = 246483000.

The previous prime is 268849621. The next prime is 268849649. The reversal of 268849639 is 936948862.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 268849639 - 2⁹ = 268849127 is a prime.

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 268849639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268849649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227637 + ... + 228814.

It is an arithmetic number, because the mean of its divisors is an integer number (36516160).

Almost surely, 2^268849639 is an apocalyptic number.

268849639 is a deficient number, since it is larger than the sum of its proper divisors (23279641).

268849639 is a wasteful number, since it uses less digits than its factorization.

268849639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456501.

The product of its digits is 4478976, while the sum is 55.

The square root of 268849639 is about 16396.6349901436. The cubic root of 268849639 is about 645.4111826435.

The spelling of 268849639 in words is "two hundred sixty-eight million, eight hundred forty-nine thousand, six hundred thirty-nine".