268396139 has 8 divisors (see below), whose sum is σ = 292965168. Its totient is φ = 243855360.

The previous prime is 268396123. The next prime is 268396159. The reversal of 268396139 is 931693862.

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 268396139 - 2⁴ = 268396123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 268396093 and 268396102.

It is not an unprimeable number, because it can be changed into a prime (268396159) 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, 16139 + ... + 28235.

It is an arithmetic number, because the mean of its divisors is an integer number (36620646).

Almost surely, 2^268396139 is an apocalyptic number.

268396139 is a deficient number, since it is larger than the sum of its proper divisors (24569029).

268396139 is a wasteful number, since it uses less digits than its factorization.

268396139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14125.

The product of its digits is 419904, while the sum is 47.

The square root of 268396139 is about 16382.8000964426. The cubic root of 268396139 is about 645.0480816669.

The spelling of 268396139 in words is "two hundred sixty-eight million, three hundred ninety-six thousand, one hundred thirty-nine".