84272173 has 8 divisors (see below), whose sum is σ = 88824600. Its totient is φ = 79829568.

The previous prime is 84272147. The next prime is 84272191. The reversal of 84272173 is 37127248.

It can be written as a sum of positive squares in 4 ways, for example, as 9847044 + 74425129 = 3138^2 + 8627^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 84272173 - 2⁹ = 84271661 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 (84275173) 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, 25878 + ... + 28951.

It is an arithmetic number, because the mean of its divisors is an integer number (11103075).

Almost surely, 2^84272173 is an apocalyptic number.

It is an amenable number.

84272173 is a deficient number, since it is larger than the sum of its proper divisors (4552427).

84272173 is a wasteful number, since it uses less digits than its factorization.

84272173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54911.

The product of its digits is 18816, while the sum is 34.

The square root of 84272173 is about 9179.9876361573. The cubic root of 84272173 is about 438.4244146904.

The spelling of 84272173 in words is "eighty-four million, two hundred seventy-two thousand, one hundred seventy-three".