85449217 has 4 divisors (see below), whose sum is σ = 97656256. Its totient is φ = 73242180.

The previous prime is 85449193. The next prime is 85449223. The reversal of 85449217 is 71294458.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 85449217 - 2¹⁹ = 84924929 is a prime.

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 85449217.

It is not an unprimeable number, because it can be changed into a prime (85449817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6103509 + ... + 6103522.

It is an arithmetic number, because the mean of its divisors is an integer number (24414064).

Almost surely, 2^85449217 is an apocalyptic number.

It is an amenable number.

85449217 is a deficient number, since it is larger than the sum of its proper divisors (12207039).

85449217 is a wasteful number, since it uses less digits than its factorization.

85449217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12207038.

The product of its digits is 80640, while the sum is 40.

The square root of 85449217 is about 9243.8745664359. The cubic root of 85449217 is about 440.4561677472.

The spelling of 85449217 in words is "eighty-five million, four hundred forty-nine thousand, two hundred seventeen".