8446161409 has 27 divisors (see below), whose sum is σ = 10384483041. Its totient is φ = 6848611560.

The previous prime is 8446161397. The next prime is 8446161431. The reversal of 8446161409 is 9041616448.

The square root of 8446161409 is 91903.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 8446161409 - 2⁵ = 8446161377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8446161109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 12222754 + ... + 12223444.

It is an arithmetic number, because the mean of its divisors is an integer number (384610483).

Almost surely, 2^8446161409 is an apocalyptic number.

8446161409 is the 91903-rd square number.

8446161409 is the 45952-nd centered octagonal number.

It is an amenable number.

8446161409 is a deficient number, since it is larger than the sum of its proper divisors (1938321632).

8446161409 is an frugal number, since it uses more digits than its factorization.

8446161409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1434 (or 717 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 43.

The cubic root of 8446161409 is about 2036.5095869912.

The spelling of 8446161409 in words is "eight billion, four hundred forty-six million, one hundred sixty-one thousand, four hundred nine".