10641209 has 4 divisors (see below), whose sum is σ = 10658304. Its totient is φ = 10624116.

The previous prime is 10641199. The next prime is 10641227. The reversal of 10641209 is 90214601.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 10641209 - 2⁴ = 10641193 is a prime.

It is a super-2 number, since 2×10641209² = 226470657963362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10641109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7577 + ... + 8870.

It is an arithmetic number, because the mean of its divisors is an integer number (2664576).

Almost surely, 2^10641209 is an apocalyptic number.

It is an amenable number.

10641209 is a deficient number, since it is larger than the sum of its proper divisors (17095).

10641209 is an equidigital number, since it uses as much as digits as its factorization.

10641209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17094.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 10641209 is about 3262.0866021613. The cubic root of 10641209 is about 219.9532200812.

The spelling of 10641209 in words is "ten million, six hundred forty-one thousand, two hundred nine".