1279939568 has 10 divisors (see below), whose sum is σ = 2479882944. Its totient is φ = 639969776.

The previous prime is 1279939567. The next prime is 1279939607. The reversal of 1279939568 is 8659399721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1279939567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39998096 + ... + 39998127.

Almost surely, 2^1279939568 is an apocalyptic number.

It is an amenable number.

1279939568 is a deficient number, since it is larger than the sum of its proper divisors (1199943376).

1279939568 is an equidigital number, since it uses as much as digits as its factorization.

1279939568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79996231 (or 79996225 counting only the distinct ones).

The product of its digits is 7348320, while the sum is 59.

The square root of 1279939568 is about 35776.2430671528. The cubic root of 1279939568 is about 1085.7499591101.

The spelling of 1279939568 in words is "one billion, two hundred seventy-nine million, nine hundred thirty-nine thousand, five hundred sixty-eight".