319780089 has 16 divisors (see below), whose sum is σ = 498683200. Its totient is φ = 201966048.

The previous prime is 319780067. The next prime is 319780141. The reversal of 319780089 is 980087913.

It is not a de Polignac number, because 319780089 - 2²⁰ = 318731513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (319780009) 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, 311164 + ... + 312189.

It is an arithmetic number, because the mean of its divisors is an integer number (31167700).

Almost surely, 2^319780089 is an apocalyptic number.

It is an amenable number.

319780089 is a deficient number, since it is larger than the sum of its proper divisors (178903111).

319780089 is a wasteful number, since it uses less digits than its factorization.

319780089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623381 (or 623375 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 319780089 is about 17882.3960642862. The cubic root of 319780089 is about 683.8336583812.

The spelling of 319780089 in words is "three hundred nineteen million, seven hundred eighty thousand, eighty-nine".