84450217 has 8 divisors (see below), whose sum is σ = 86005856. Its totient is φ = 82903392.

The previous prime is 84450187. The next prime is 84450229. The reversal of 84450217 is 71205448.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84450217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84450277) 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, 18958 + ... + 22984.

It is an arithmetic number, because the mean of its divisors is an integer number (10750732).

Almost surely, 2^84450217 is an apocalyptic number.

It is an amenable number.

84450217 is a deficient number, since it is larger than the sum of its proper divisors (1555639).

84450217 is a wasteful number, since it uses less digits than its factorization.

84450217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4407.

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 84450217 is about 9189.6799182561. The cubic root of 84450217 is about 438.7329543733.

The spelling of 84450217 in words is "eighty-four million, four hundred fifty thousand, two hundred seventeen".