1389803 has 4 divisors (see below), whose sum is σ = 1422168. Its totient is φ = 1357440.

The previous prime is 1389797. The next prime is 1389809. The reversal of 1389803 is 3089831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3089831 = 139 ⋅22229.

It is an interprime number because it is at equal distance from previous prime (1389797) and next prime (1389809).

It is a cyclic number.

It is not a de Polignac number, because 1389803 - 2⁸ = 1389547 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1389803.

It is not an unprimeable number, because it can be changed into a prime (1389809) 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, 16118 + ... + 16203.

It is an arithmetic number, because the mean of its divisors is an integer number (355542).

2^1389803 is an apocalyptic number.

1389803 is a deficient number, since it is larger than the sum of its proper divisors (32365).

1389803 is an equidigital number, since it uses as much as digits as its factorization.

1389803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32364.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 1389803 is about 1178.8990626852. The cubic root of 1389803 is about 111.5966304229.

The spelling of 1389803 in words is "one million, three hundred eighty-nine thousand, eight hundred three".