8009641 has 4 divisors (see below), whose sum is σ = 8019652. Its totient is φ = 7999632.

The previous prime is 8009629. The next prime is 8009707. The reversal of 8009641 is 1469008.

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 6579225 + 1430416 = 2565^2 + 1196^2 .

It is a cyclic number.

It is not a de Polignac number, because 8009641 - 2⁵ = 8009609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8009611) 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, 3690 + ... + 5443.

It is an arithmetic number, because the mean of its divisors is an integer number (2004913).

Almost surely, 2^8009641 is an apocalyptic number.

It is an amenable number.

8009641 is a deficient number, since it is larger than the sum of its proper divisors (10011).

8009641 is an equidigital number, since it uses as much as digits as its factorization.

8009641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10010.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 8009641 is about 2830.1309156998. The cubic root of 8009641 is about 200.0803094143.

The spelling of 8009641 in words is "eight million, nine thousand, six hundred forty-one".