268931439396 has 81 divisors (see below), whose sum is σ = 717618659121. Its totient is φ = 84907048608.

The previous prime is 268931439373. The next prime is 268931439401. The reversal of 268931439396 is 693934139862.

The square root of 268931439396 is 518586.

It is a perfect power (a square), and thus also a powerful number.

268931439396 is a `hidden beast` number, since 2 + 6 + 89 + 31 + 439 + 3 + 96 = 666.

It can be written as a sum of positive squares in only one way, i.e., 197770541796 + 71160897600 = 444714^2 + 266760^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 59116530 + ... + 59121078.

Almost surely, 2^268931439396 is an apocalyptic number.

268931439396 is the 518586-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 268931439396

268931439396 is an abundant number, since it is smaller than the sum of its proper divisors (448687219725).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

268931439396 is an equidigital number, since it uses as much as digits as its factorization.

268931439396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9146 (or 4573 counting only the distinct ones).

The product of its digits is 45349632, while the sum is 63.

The spelling of 268931439396 in words is "two hundred sixty-eight billion, nine hundred thirty-one million, four hundred thirty-nine thousand, three hundred ninety-six".