268939 has 8 divisors (see below), whose sum is σ = 306432. Its totient is φ = 233640.

The previous prime is 268937. The next prime is 268969. The reversal of 268939 is 939862.

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

It is not a de Polignac number, because 268939 - 2¹ = 268937 is a prime.

It is an Ulam number.

It is a Duffinian number.

268939 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 268898 and 268907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268937) 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, 279 + ... + 784.

It is an arithmetic number, because the mean of its divisors is an integer number (38304).

2²⁶⁸⁹³⁹ is an apocalyptic number.

268939 is a deficient number, since it is larger than the sum of its proper divisors (37493).

268939 is a wasteful number, since it uses less digits than its factorization.

268939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1097.

The product of its digits is 23328, while the sum is 37.

The square root of 268939 is about 518.5932895825. The cubic root of 268939 is about 64.5482682584.

The spelling of 268939 in words is "two hundred sixty-eight thousand, nine hundred thirty-nine".