8409447673 has 8 divisors (see below), whose sum is σ = 9176845536. Its totient is φ = 7642533600.

The previous prime is 8409447661. The next prime is 8409447679. The reversal of 8409447673 is 3767449048.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8409447673 - 2⁹ = 8409447161 is a prime.

It is a super-2 number, since 2×8409447673² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8409447673.

It is not an unprimeable number, because it can be changed into a prime (8409447679) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84108 + ... + 154573.

It is an arithmetic number, because the mean of its divisors is an integer number (1147105692).

Almost surely, 2^8409447673 is an apocalyptic number.

It is an amenable number.

8409447673 is a deficient number, since it is larger than the sum of its proper divisors (767397863).

8409447673 is a wasteful number, since it uses less digits than its factorization.

8409447673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241895.

The product of its (nonzero) digits is 4064256, while the sum is 52.

The square root of 8409447673 is about 91703.0406965876. The cubic root of 8409447673 is about 2033.5545376443.

The spelling of 8409447673 in words is "eight billion, four hundred nine million, four hundred forty-seven thousand, six hundred seventy-three".