1139138679 has 32 divisors (see below), whose sum is σ = 1812049920. Its totient is φ = 622828800.

The previous prime is 1139138677. The next prime is 1139138681. The reversal of 1139138679 is 9768319311.

It is an interprime number because it is at equal distance from previous prime (1139138677) and next prime (1139138681).

It is not a de Polignac number, because 1139138679 - 2¹ = 1139138677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1139138677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48109 + ... + 67769.

It is an arithmetic number, because the mean of its divisors is an integer number (56626560).

Almost surely, 2^1139138679 is an apocalyptic number.

1139138679 is a deficient number, since it is larger than the sum of its proper divisors (672911241).

1139138679 is a wasteful number, since it uses less digits than its factorization.

1139138679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19791.

The product of its digits is 244944, while the sum is 48.

The square root of 1139138679 is about 33751.1285589090. The cubic root of 1139138679 is about 1044.3807687950.

The spelling of 1139138679 in words is "one billion, one hundred thirty-nine million, one hundred thirty-eight thousand, six hundred seventy-nine".