1392431589 has 6 divisors (see below), whose sum is σ = 2011290086. Its totient is φ = 928287720.

The previous prime is 1392431561. The next prime is 1392431603. The reversal of 1392431589 is 9851342931.

It is a happy number.

1392431589 is a `hidden beast` number, since 1 + 39 + 2 + 4 + 31 + 589 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1364711364 + 27720225 = 36942^2 + 5265^2 .

It is not a de Polignac number, because 1392431589 - 2¹¹ = 1392429541 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 (1392433589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 77357302 + ... + 77357319.

Almost surely, 2^1392431589 is an apocalyptic number.

It is an amenable number.

1392431589 is a deficient number, since it is larger than the sum of its proper divisors (618858497).

1392431589 is a wasteful number, since it uses less digits than its factorization.

1392431589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154714627 (or 154714624 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 1392431589 is about 37315.2996638108. The cubic root of 1392431589 is about 1116.6694181066.

The spelling of 1392431589 in words is "one billion, three hundred ninety-two million, four hundred thirty-one thousand, five hundred eighty-nine".