1389553 has 4 divisors (see below), whose sum is σ = 1515888. Its totient is φ = 1263220.

The previous prime is 1389551. The next prime is 1389559. The reversal of 1389553 is 3559831.

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 1389553 - 2¹ = 1389551 is a prime.

1389553 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1389551) 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, 63151 + ... + 63172.

It is an arithmetic number, because the mean of its divisors is an integer number (378972).

2^1389553 is an apocalyptic number.

It is an amenable number.

1389553 is a deficient number, since it is larger than the sum of its proper divisors (126335).

1389553 is a wasteful number, since it uses less digits than its factorization.

1389553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126334.

The product of its digits is 16200, while the sum is 34.

The square root of 1389553 is about 1178.7930267863. The cubic root of 1389553 is about 111.5899386278.

The spelling of 1389553 in words is "one million, three hundred eighty-nine thousand, five hundred fifty-three".