1389563 has 8 divisors (see below), whose sum is σ = 1681632. Its totient is φ = 1120896.

The previous prime is 1389559. The next prime is 1389569. The reversal of 1389563 is 3659831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1389563 - 2² = 1389559 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 (1389569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5720 + ... + 5957.

It is an arithmetic number, because the mean of its divisors is an integer number (210204).

2^1389563 is an apocalyptic number.

1389563 is a deficient number, since it is larger than the sum of its proper divisors (292069).

1389563 is a wasteful number, since it uses less digits than its factorization.

1389563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11701.

The product of its digits is 19440, while the sum is 35.

The square root of 1389563 is about 1178.7972684054. The cubic root of 1389563 is about 111.5902063150.

The spelling of 1389563 in words is "one million, three hundred eighty-nine thousand, five hundred sixty-three".