320860489 has 4 divisors (see below), whose sum is σ = 321095556. Its totient is φ = 320625424.

The previous prime is 320860483. The next prime is 320860591. The reversal of 320860489 is 984068023.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 315417600 + 5442889 = 17760^2 + 2333^2 .

It is a cyclic number.

It is not a de Polignac number, because 320860489 - 2¹⁵ = 320827721 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320860483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115474 + ... + 118219.

It is an arithmetic number, because the mean of its divisors is an integer number (80273889).

Almost surely, 2^320860489 is an apocalyptic number.

It is an amenable number.

320860489 is a deficient number, since it is larger than the sum of its proper divisors (235067).

320860489 is a wasteful number, since it uses less digits than its factorization.

320860489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235066.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 320860489 is about 17912.5790717027. The cubic root of 320860489 is about 684.6029197401.

The spelling of 320860489 in words is "three hundred twenty million, eight hundred sixty thousand, four hundred eighty-nine".