8044891609 has 16 divisors (see below), whose sum is σ = 8322880000. Its totient is φ = 7772656320.

The previous prime is 8044891607. The next prime is 8044891627. The reversal of 8044891609 is 9061984408.

It is a cyclic number.

It is not a de Polignac number, because 8044891609 - 2¹ = 8044891607 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8044891601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 954787 + ... + 963175.

It is an arithmetic number, because the mean of its divisors is an integer number (520180000).

Almost surely, 2^8044891609 is an apocalyptic number.

It is an amenable number.

8044891609 is a deficient number, since it is larger than the sum of its proper divisors (277988391).

8044891609 is a wasteful number, since it uses less digits than its factorization.

8044891609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8728.

The product of its (nonzero) digits is 497664, while the sum is 49.

The square root of 8044891609 is about 89693.3197568247. The cubic root of 8044891609 is about 2003.7339917311.

The spelling of 8044891609 in words is "eight billion, forty-four million, eight hundred ninety-one thousand, six hundred nine".