389389489 has 8 divisors (see below), whose sum is σ = 395280000. Its totient is φ = 383510400.

The previous prime is 389389487. The next prime is 389389513. The reversal of 389389489 is 984983983.

It is a happy number.

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 389389489 - 2¹ = 389389487 is a prime.

It is a super-2 number, since 2×389389489² = 303248348287362242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (389389487) 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, 86484 + ... + 90874.

It is an arithmetic number, because the mean of its divisors is an integer number (49410000).

Almost surely, 2^389389489 is an apocalyptic number.

It is an amenable number.

389389489 is a deficient number, since it is larger than the sum of its proper divisors (5890511).

389389489 is a wasteful number, since it uses less digits than its factorization.

389389489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5711.

The product of its digits is 13436928, while the sum is 61.

The square root of 389389489 is about 19732.9543910688. The cubic root of 389389489 is about 730.2329206077.

It can be divided in two parts, 3893894 and 89, that added together give a palindrome (3893983).

The spelling of 389389489 in words is "three hundred eighty-nine million, three hundred eighty-nine thousand, four hundred eighty-nine".