939481589 has 4 divisors (see below), whose sum is σ = 941779020. Its totient is φ = 937184160.

The previous prime is 939481583. The next prime is 939481601. The reversal of 939481589 is 985184939.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 985184939 = 2081 ⋅473419.

It can be written as a sum of positive squares in 2 ways, for example, as 607622500 + 331859089 = 24650^2 + 18217^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-939481589 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 (939481583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1148102 + ... + 1148919.

It is an arithmetic number, because the mean of its divisors is an integer number (235444755).

Almost surely, 2^939481589 is an apocalyptic number.

It is an amenable number.

939481589 is a deficient number, since it is larger than the sum of its proper divisors (2297431).

939481589 is a wasteful number, since it uses less digits than its factorization.

939481589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2297430.

The product of its digits is 2799360, while the sum is 56.

The square root of 939481589 is about 30650.9639163273. The cubic root of 939481589 is about 979.4059946735.

The spelling of 939481589 in words is "nine hundred thirty-nine million, four hundred eighty-one thousand, five hundred eighty-nine".