1439934139 has 12 divisors (see below), whose sum is σ = 1678918584. Its totient is φ = 1231360704.

The previous prime is 1439934137. The next prime is 1439934149. The reversal of 1439934139 is 9314399341.

It is not a de Polignac number, because 1439934139 - 2¹ = 1439934137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1439934137) 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 in 11 ways as a sum of consecutive naturals, for example, 12717 + ... + 55150.

It is an arithmetic number, because the mean of its divisors is an integer number (139909882).

Almost surely, 2^1439934139 is an apocalyptic number.

1439934139 is a deficient number, since it is larger than the sum of its proper divisors (238984445).

1439934139 is an equidigital number, since it uses as much as digits as its factorization.

1439934139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68314 (or 68307 counting only the distinct ones).

The product of its digits is 314928, while the sum is 46.

The square root of 1439934139 is about 37946.4641172270. The cubic root of 1439934139 is about 1129.2260184020.

The spelling of 1439934139 in words is "one billion, four hundred thirty-nine million, nine hundred thirty-four thousand, one hundred thirty-nine".