1385909 has 8 divisors (see below), whose sum is σ = 1627008. Its totient is φ = 1155600.

The previous prime is 1385899. The next prime is 1385921. The reversal of 1385909 is 9095831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1385909 - 2⁴ = 1385893 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 2417 + ... + 2934.

It is an arithmetic number, because the mean of its divisors is an integer number (203376).

2^1385909 is an apocalyptic number.

It is an amenable number.

1385909 is a deficient number, since it is larger than the sum of its proper divisors (241099).

1385909 is an equidigital number, since it uses as much as digits as its factorization.

1385909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5395.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 1385909 is about 1177.2463633412. The cubic root of 1385909 is about 111.4923077804.

The spelling of 1385909 in words is "one million, three hundred eighty-five thousand, nine hundred nine".