1101009 has 32 divisors (see below), whose sum is σ = 1872640. Its totient is φ = 559872.

The previous prime is 1100977. The next prime is 1101071. The reversal of 1101009 is 9001011.

It is not a de Polignac number, because 1101009 - 2⁵ = 1100977 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1100985 and 1101003.

It is not an unprimeable number, because it can be changed into a prime (1101109) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10047 + ... + 10155.

It is an arithmetic number, because the mean of its divisors is an integer number (58520).

2^1101009 is an apocalyptic number.

It is an amenable number.

1101009 is a deficient number, since it is larger than the sum of its proper divisors (771631).

1101009 is a wasteful number, since it uses less digits than its factorization.

1101009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169.

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

The square root of 1101009 is about 1049.2897597899. The cubic root of 1101009 is about 103.2595646466.

The spelling of 1101009 in words is "one million, one hundred one thousand, nine".