8450221855 has 8 divisors (see below), whose sum is σ = 10143216864. Its totient is φ = 6758210400.

The previous prime is 8450221853. The next prime is 8450221891. The reversal of 8450221855 is 5581220548.

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

It is not a de Polignac number, because 8450221855 - 2¹ = 8450221853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8450221853) 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, 226851 + ... + 261460.

It is an arithmetic number, because the mean of its divisors is an integer number (1267902108).

Almost surely, 2^8450221855 is an apocalyptic number.

8450221855 is a deficient number, since it is larger than the sum of its proper divisors (1692995009).

8450221855 is a wasteful number, since it uses less digits than its factorization.

8450221855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491777.

The product of its (nonzero) digits is 128000, while the sum is 40.

The square root of 8450221855 is about 91925.0882784455. The cubic root of 8450221855 is about 2036.8358816650.

The spelling of 8450221855 in words is "eight billion, four hundred fifty million, two hundred twenty-one thousand, eight hundred fifty-five".