1009091 has 8 divisors (see below), whose sum is σ = 1039584. Its totient is φ = 979200.

The previous prime is 1009061. The next prime is 1009097. The reversal of 1009091 is 1909001.

1009091 = T₉₃ + T₉₄ + ... + T₁₈₉.

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 1009091 - 2¹⁴ = 992707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1009097) 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, 9746 + ... + 9848.

It is an arithmetic number, because the mean of its divisors is an integer number (129948).

2^1009091 is an apocalyptic number.

1009091 is a deficient number, since it is larger than the sum of its proper divisors (30493).

1009091 is a wasteful number, since it uses less digits than its factorization.

1009091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301.

The product of its (nonzero) digits is 81, while the sum is 20.

The square root of 1009091 is about 1004.5352159083. The cubic root of 1009091 is about 100.3021196513.

The spelling of 1009091 in words is "one million, nine thousand, ninety-one".