1393839 has 6 divisors (see below), whose sum is σ = 2013336. Its totient is φ = 929220.

The previous prime is 1393837. The next prime is 1393871. The reversal of 1393839 is 9383931.

It is not a de Polignac number, because 1393839 - 2¹ = 1393837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1393831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 77427 + ... + 77444.

It is an arithmetic number, because the mean of its divisors is an integer number (335556).

2^1393839 is an apocalyptic number.

1393839 is a deficient number, since it is larger than the sum of its proper divisors (619497).

1393839 is a wasteful number, since it uses less digits than its factorization.

1393839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154877 (or 154874 counting only the distinct ones).

The product of its digits is 17496, while the sum is 36.

The square root of 1393839 is about 1180.6095883060. The cubic root of 1393839 is about 111.7045518837.

The spelling of 1393839 in words is "one million, three hundred ninety-three thousand, eight hundred thirty-nine".