1109001 has 16 divisors (see below), whose sum is σ = 1549184. Its totient is φ = 705024.

The previous prime is 1108999. The next prime is 1109021. The reversal of 1109001 is 1009011.

It is not a de Polignac number, because 1109001 - 2¹ = 1108999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1109021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10716 + ... + 10818.

It is an arithmetic number, because the mean of its divisors is an integer number (96824).

2^1109001 is an apocalyptic number.

It is an amenable number.

1109001 is a deficient number, since it is larger than the sum of its proper divisors (440183).

1109001 is a wasteful number, since it uses less digits than its factorization.

1109001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240.

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

The square root of 1109001 is about 1053.0911641449. The cubic root of 1109001 is about 103.5088092574.

The spelling of 1109001 in words is "one million, one hundred nine thousand, one".