1355839 has 4 divisors (see below), whose sum is σ = 1358224. Its totient is φ = 1353456.

The previous prime is 1355831. The next prime is 1355843. The reversal of 1355839 is 9385531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1355839 - 2³ = 1355831 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 (1355831) 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, 214 + ... + 1660.

It is an arithmetic number, because the mean of its divisors is an integer number (339556).

2^1355839 is an apocalyptic number.

1355839 is a deficient number, since it is larger than the sum of its proper divisors (2385).

1355839 is an equidigital number, since it uses as much as digits as its factorization.

1355839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2384.

The product of its digits is 16200, while the sum is 34.

The square root of 1355839 is about 1164.4049982716. The cubic root of 1355839 is about 110.6800569675.

The spelling of 1355839 in words is "one million, three hundred fifty-five thousand, eight hundred thirty-nine".