84207317 has 4 divisors (see below), whose sum is σ = 86261196. Its totient is φ = 82153440.

The previous prime is 84207313. The next prime is 84207353. The reversal of 84207317 is 71370248.

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 40462321 + 43744996 = 6361^2 + 6614^2 .

It is a cyclic number.

It is not a de Polignac number, because 84207317 - 2² = 84207313 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 (84207311) 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, 1026878 + ... + 1026959.

It is an arithmetic number, because the mean of its divisors is an integer number (21565299).

Almost surely, 2^84207317 is an apocalyptic number.

It is an amenable number.

84207317 is a deficient number, since it is larger than the sum of its proper divisors (2053879).

84207317 is a wasteful number, since it uses less digits than its factorization.

84207317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2053878.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 84207317 is about 9176.4544896163. The cubic root of 84207317 is about 438.3119151137.

The spelling of 84207317 in words is "eighty-four million, two hundred seven thousand, three hundred seventeen".