1319939889 has 16 divisors (see below), whose sum is σ = 1772253120. Its totient is φ = 873815040.

The previous prime is 1319939849. The next prime is 1319939897. The reversal of 1319939889 is 9889399131.

It is not a de Polignac number, because 1319939889 - 2¹¹ = 1319937841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1319939809) 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 15 ways as a sum of consecutive naturals, for example, 271609 + ... + 276425.

It is an arithmetic number, because the mean of its divisors is an integer number (110765820).

Almost surely, 2^1319939889 is an apocalyptic number.

It is an amenable number.

1319939889 is a deficient number, since it is larger than the sum of its proper divisors (452313231).

1319939889 is a wasteful number, since it uses less digits than its factorization.

1319939889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5440.

The product of its digits is 3779136, while the sum is 60.

The square root of 1319939889 is about 36330.9769893407. The cubic root of 1319939889 is about 1096.9446588597.

The spelling of 1319939889 in words is "one billion, three hundred nineteen million, nine hundred thirty-nine thousand, eight hundred eighty-nine".