389444473 has 4 divisors (see below), whose sum is σ = 424848528. Its totient is φ = 354040420.

The previous prime is 389444467. The next prime is 389444513. The reversal of 389444473 is 374444983.

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.

It is a cyclic number.

It is not a de Polignac number, because 389444473 - 2⁹ = 389443961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (389447473) 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, 17702011 + ... + 17702032.

It is an arithmetic number, because the mean of its divisors is an integer number (106212132).

Almost surely, 2^389444473 is an apocalyptic number.

It is an amenable number.

389444473 is a deficient number, since it is larger than the sum of its proper divisors (35404055).

389444473 is a wasteful number, since it uses less digits than its factorization.

389444473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35404054.

The product of its digits is 1161216, while the sum is 46.

The square root of 389444473 is about 19734.3475443198. The cubic root of 389444473 is about 730.2672899973.

The spelling of 389444473 in words is "three hundred eighty-nine million, four hundred forty-four thousand, four hundred seventy-three".