84445117 has 4 divisors (see below), whose sum is σ = 86504796. Its totient is φ = 82385440.

The previous prime is 84445093. The next prime is 84445169. The reversal of 84445117 is 71154448.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4414201 + 80030916 = 2101^2 + 8946^2 .

It is a cyclic number.

It is not a de Polignac number, because 84445117 - 2¹⁹ = 83920829 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 (84445217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1029778 + ... + 1029859.

It is an arithmetic number, because the mean of its divisors is an integer number (21626199).

Almost surely, 2^84445117 is an apocalyptic number.

It is an amenable number.

84445117 is a deficient number, since it is larger than the sum of its proper divisors (2059679).

84445117 is a wasteful number, since it uses less digits than its factorization.

84445117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2059678.

The product of its digits is 17920, while the sum is 34.

The square root of 84445117 is about 9189.4024288851. The cubic root of 84445117 is about 438.7241224122.

The spelling of 84445117 in words is "eighty-four million, four hundred forty-five thousand, one hundred seventeen".