1139664679 has 2 divisors, whose sum is σ = 1139664680. Its totient is φ = 1139664678.

The previous prime is 1139664677. The next prime is 1139664703. The reversal of 1139664679 is 9764669311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1139664679 - 2¹ = 1139664677 is a prime.

Together with 1139664677, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1139664677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569832339 + 569832340.

It is an arithmetic number, because the mean of its divisors is an integer number (569832340).

Almost surely, 2^1139664679 is an apocalyptic number.

1139664679 is a deficient number, since it is larger than the sum of its proper divisors (1).

1139664679 is an equidigital number, since it uses as much as digits as its factorization.

1139664679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1469664, while the sum is 52.

The square root of 1139664679 is about 33758.9199916111. The cubic root of 1139664679 is about 1044.5414924958.

The spelling of 1139664679 in words is "one billion, one hundred thirty-nine million, six hundred sixty-four thousand, six hundred seventy-nine".