319870489 has 2 divisors, whose sum is σ = 319870490. Its totient is φ = 319870488.

The previous prime is 319870471. The next prime is 319870543. The reversal of 319870489 is 984078913.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 258952464 + 60918025 = 16092^2 + 7805^2 .

It is a cyclic number.

It is not a de Polignac number, because 319870489 - 2⁵ = 319870457 is a prime.

It is not a weakly prime, because it can be changed into another prime (319870189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159935244 + 159935245.

It is an arithmetic number, because the mean of its divisors is an integer number (159935245).

Almost surely, 2^319870489 is an apocalyptic number.

It is an amenable number.

319870489 is a deficient number, since it is larger than the sum of its proper divisors (1).

319870489 is an equidigital number, since it uses as much as digits as its factorization.

319870489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 435456, while the sum is 49.

The square root of 319870489 is about 17884.9235111588. The cubic root of 319870489 is about 683.8980909298.

The spelling of 319870489 in words is "three hundred nineteen million, eight hundred seventy thousand, four hundred eighty-nine".