1392589 has 12 divisors (see below), whose sum is σ = 1623132. Its totient is φ = 1189760.

The previous prime is 1392557. The next prime is 1392607. The reversal of 1392589 is 9852931.

It can be written as a sum of positive squares in 2 ways, for example, as 1283689 + 108900 = 1133^2 + 330^2 .

It is not a de Polignac number, because 1392589 - 2⁵ = 1392557 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 (1392539) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1719 + ... + 2395.

It is an arithmetic number, because the mean of its divisors is an integer number (135261).

2^1392589 is an apocalyptic number.

It is an amenable number.

1392589 is a deficient number, since it is larger than the sum of its proper divisors (230543).

1392589 is a wasteful number, since it uses less digits than its factorization.

1392589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716 (or 705 counting only the distinct ones).

The product of its digits is 19440, while the sum is 37.

The square root of 1392589 is about 1180.0800820283. The cubic root of 1392589 is about 111.6711495440.

The spelling of 1392589 in words is "one million, three hundred ninety-two thousand, five hundred eighty-nine".