1385939 has 4 divisors (see below), whose sum is σ = 1433760. Its totient is φ = 1338120.

The previous prime is 1385929. The next prime is 1385947. The reversal of 1385939 is 9395831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9395831 = 401 ⋅23431.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1385939 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1385929) 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 3 ways as a sum of consecutive naturals, for example, 23867 + ... + 23924.

It is an arithmetic number, because the mean of its divisors is an integer number (358440).

2^1385939 is an apocalyptic number.

1385939 is a deficient number, since it is larger than the sum of its proper divisors (47821).

1385939 is an equidigital number, since it uses as much as digits as its factorization.

1385939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47820.

The product of its digits is 29160, while the sum is 38.

The square root of 1385939 is about 1177.2591048703. The cubic root of 1385939 is about 111.4931122452.

The spelling of 1385939 in words is "one million, three hundred eighty-five thousand, nine hundred thirty-nine".