1011009 has 8 divisors (see below), whose sum is σ = 1419040. Its totient is φ = 638496.

The previous prime is 1011001. The next prime is 1011013. The reversal of 1011009 is 9001101.

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

It is not a de Polignac number, because 1011009 - 2³ = 1011001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1010985 and 1011003.

It is not an unprimeable number, because it can be changed into a prime (1011001) 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, 8812 + ... + 8925.

It is an arithmetic number, because the mean of its divisors is an integer number (177380).

2^1011009 is an apocalyptic number.

1011009 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1011009 is a deficient number, since it is larger than the sum of its proper divisors (408031).

1011009 is a wasteful number, since it uses less digits than its factorization.

1011009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17759.

The product of its (nonzero) digits is 9, while the sum is 12.

The square root of 1011009 is about 1005.4894330623. The cubic root of 1011009 is about 100.3656281976.

The spelling of 1011009 in words is "one million, eleven thousand, nine".