1085909 has 8 divisors (see below), whose sum is σ = 1254528. Its totient is φ = 928960.

The previous prime is 1085891. The next prime is 1085911. The reversal of 1085909 is 9095801.

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 1085909 - 2¹² = 1081813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1085989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2717 + ... + 3090.

It is an arithmetic number, because the mean of its divisors is an integer number (156816).

2^1085909 is an apocalyptic number.

It is an amenable number.

1085909 is a deficient number, since it is larger than the sum of its proper divisors (168619).

1085909 is a wasteful number, since it uses less digits than its factorization.

1085909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5835.

The product of its (nonzero) digits is 3240, while the sum is 32.

The square root of 1085909 is about 1042.0695754123. The cubic root of 1085909 is about 102.7853322802.

The spelling of 1085909 in words is "one million, eighty-five thousand, nine hundred nine".