320091889 has 8 divisors (see below), whose sum is σ = 344856512. Its totient is φ = 295347600.

The previous prime is 320091887. The next prime is 320091899. The reversal of 320091889 is 988190023.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 320091889 - 2¹ = 320091887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (320091883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48964 + ... + 55114.

It is an arithmetic number, because the mean of its divisors is an integer number (43107064).

Almost surely, 2^320091889 is an apocalyptic number.

It is an amenable number.

320091889 is a deficient number, since it is larger than the sum of its proper divisors (24764623).

320091889 is a wasteful number, since it uses less digits than its factorization.

320091889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10167.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 320091889 is about 17891.1120112753. The cubic root of 320091889 is about 684.0558423966.

The spelling of 320091889 in words is "three hundred twenty million, ninety-one thousand, eight hundred eighty-nine".