1090009 has 8 divisors (see below), whose sum is σ = 1124928. Its totient is φ = 1055760.

The previous prime is 1090003. The next prime is 1090013. The reversal of 1090009 is 9000901.

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 1090009 - 2⁹ = 1089497 is a prime.

It is a Duffinian number.

1090009 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1090003) 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, 6444 + ... + 6610.

It is an arithmetic number, because the mean of its divisors is an integer number (140616).

2^1090009 is an apocalyptic number.

It is an amenable number.

1090009 is a deficient number, since it is larger than the sum of its proper divisors (34919).

1090009 is a wasteful number, since it uses less digits than its factorization.

1090009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335.

The product of its (nonzero) digits is 81, while the sum is 19.

The square root of 1090009 is about 1044.0349611004. The cubic root of 1090009 is about 102.9145299066.

The spelling of 1090009 in words is "one million, ninety thousand, nine".