389845689 has 8 divisors (see below), whose sum is σ = 521771712. Its totient is φ = 258908400.

The previous prime is 389845681. The next prime is 389845691. The reversal of 389845689 is 986548983.

It is a happy number.

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

It is not a de Polignac number, because 389845689 - 2³ = 389845681 is a prime.

It is a super-2 number, since 2×389845689² = 303959322463769442, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (389845681) 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, 246262 + ... + 247839.

It is an arithmetic number, because the mean of its divisors is an integer number (65221464).

Almost surely, 2^389845689 is an apocalyptic number.

It is an amenable number.

389845689 is a deficient number, since it is larger than the sum of its proper divisors (131926023).

389845689 is a wasteful number, since it uses less digits than its factorization.

389845689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494367.

The product of its digits is 14929920, while the sum is 60.

The square root of 389845689 is about 19744.5103509811. The cubic root of 389845689 is about 730.5179841543.

The spelling of 389845689 in words is "three hundred eighty-nine million, eight hundred forty-five thousand, six hundred eighty-nine".