1009111 has 4 divisors (see below), whose sum is σ = 1013032. Its totient is φ = 1005192.

The previous prime is 1009097. The next prime is 1009121. The reversal of 1009111 is 1119001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1119001 = 13 ⋅86077.

It is a cyclic number.

It is not a de Polignac number, because 1009111 - 2⁷ = 1008983 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1009091 and 1009100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1009121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1545 + ... + 2098.

It is an arithmetic number, because the mean of its divisors is an integer number (253258).

2^1009111 is an apocalyptic number.

1009111 is a deficient number, since it is larger than the sum of its proper divisors (3921).

1009111 is an equidigital number, since it uses as much as digits as its factorization.

1009111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3920.

The product of its (nonzero) digits is 9, while the sum is 13.

The square root of 1009111 is about 1004.5451707116. The cubic root of 1009111 is about 100.3027823035.

The spelling of 1009111 in words is "one million, nine thousand, one hundred eleven".