389504533 has 16 divisors (see below), whose sum is σ = 428950080. Its totient is φ = 350752000.

The previous prime is 389504443. The next prime is 389504543. The reversal of 389504533 is 335405983.

It is a cyclic number.

It is not a de Polignac number, because 389504533 - 2¹⁷ = 389373461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389504543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 971133 + ... + 971533.

It is an arithmetic number, because the mean of its divisors is an integer number (26809380).

Almost surely, 2^389504533 is an apocalyptic number.

It is an amenable number.

389504533 is a deficient number, since it is larger than the sum of its proper divisors (39445547).

389504533 is a wasteful number, since it uses less digits than its factorization.

389504533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1028.

The product of its (nonzero) digits is 194400, while the sum is 40.

The square root of 389504533 is about 19735.8691979857. The cubic root of 389504533 is about 730.3048285956.

The spelling of 389504533 in words is "three hundred eighty-nine million, five hundred four thousand, five hundred thirty-three".