389318089 has 4 divisors (see below), whose sum is σ = 389909520. Its totient is φ = 388726660.

The previous prime is 389318053. The next prime is 389318093. The reversal of 389318089 is 980813983.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 980813983 = 313 ⋅3133591.

It is a cyclic number.

It is not a de Polignac number, because 389318089 - 2¹¹ = 389316041 is a prime.

It is a super-2 number, since 2×389318089² = 303137148845223842, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) 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 (389318009) 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, 294727 + ... + 296044.

It is an arithmetic number, because the mean of its divisors is an integer number (97477380).

Almost surely, 2^389318089 is an apocalyptic number.

It is an amenable number.

389318089 is a deficient number, since it is larger than the sum of its proper divisors (591431).

389318089 is an equidigital number, since it uses as much as digits as its factorization.

389318089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591430.

The product of its (nonzero) digits is 373248, while the sum is 49.

The square root of 389318089 is about 19731.1451517645. The cubic root of 389318089 is about 730.1882850785.

The spelling of 389318089 in words is "three hundred eighty-nine million, three hundred eighteen thousand, eighty-nine".