1040909 has 4 divisors (see below), whose sum is σ = 1063104. Its totient is φ = 1018716.

The previous prime is 1040899. The next prime is 1040929. The reversal of 1040909 is 9090401.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9090401 = 53 ⋅171517.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1040909 is a prime.

It is a Duffinian number.

1040909 is a modest number, since divided by 909 gives 104 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040929) 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 3 ways as a sum of consecutive naturals, for example, 11027 + ... + 11120.

It is an arithmetic number, because the mean of its divisors is an integer number (265776).

2^1040909 is an apocalyptic number.

It is an amenable number.

1040909 is a deficient number, since it is larger than the sum of its proper divisors (22195).

1040909 is an equidigital number, since it uses as much as digits as its factorization.

1040909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22194.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 1040909 is about 1020.2494792942. The cubic root of 1040909 is about 101.3454497958.

The spelling of 1040909 in words is "one million, forty thousand, nine hundred nine".