1087909 has 8 divisors (see below), whose sum is σ = 1128960. Its totient is φ = 1047696.

The previous prime is 1087907. The next prime is 1087937. The reversal of 1087909 is 9097801.

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 1087909 - 2¹ = 1087907 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 (1087903) 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, 3567 + ... + 3859.

It is an arithmetic number, because the mean of its divisors is an integer number (141120).

2^1087909 is an apocalyptic number.

It is an amenable number.

1087909 is a deficient number, since it is larger than the sum of its proper divisors (41051).

1087909 is an equidigital number, since it uses as much as digits as its factorization.

1087909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419.

The product of its (nonzero) digits is 4536, while the sum is 34.

The square root of 1087909 is about 1043.0287627865. The cubic root of 1087909 is about 102.8483960632.

The spelling of 1087909 in words is "one million, eighty-seven thousand, nine hundred nine".