1389043 has 4 divisors (see below), whose sum is σ = 1399320. Its totient is φ = 1378768.

The previous prime is 1389007. The next prime is 1389083. The reversal of 1389043 is 3409831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3409831 = 67 ⋅50893.

It is a de Polignac number, because none of the positive numbers 2^k-1389043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1389083) 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, 4933 + ... + 5206.

It is an arithmetic number, because the mean of its divisors is an integer number (349830).

2^1389043 is an apocalyptic number.

1389043 is a deficient number, since it is larger than the sum of its proper divisors (10277).

1389043 is a wasteful number, since it uses less digits than its factorization.

1389043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10276.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 1389043 is about 1178.5766839710. The cubic root of 1389043 is about 111.5762848766.

The spelling of 1389043 in words is "one million, three hundred eighty-nine thousand, forty-three".