10409009 has 4 divisors (see below), whose sum is σ = 11209716. Its totient is φ = 9608304.

The previous prime is 10408969. The next prime is 10409033. The reversal of 10409009 is 90090401.

10409009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5880625 + 4528384 = 2425^2 + 2128^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10409009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10469009) 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, 400334 + ... + 400359.

It is an arithmetic number, because the mean of its divisors is an integer number (2802429).

Almost surely, 2^10409009 is an apocalyptic number.

It is an amenable number.

10409009 is a deficient number, since it is larger than the sum of its proper divisors (800707).

10409009 is an equidigital number, since it uses as much as digits as its factorization.

10409009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800706.

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

The square root of 10409009 is about 3226.2995831138. The cubic root of 10409009 is about 218.3415863607.

The spelling of 10409009 in words is "ten million, four hundred nine thousand, nine".