84379215 has 8 divisors (see below), whose sum is σ = 135006768. Its totient is φ = 45002240.

The previous prime is 84379199. The next prime is 84379219. The reversal of 84379215 is 51297348.

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

It is not a de Polignac number, because 84379215 - 2⁴ = 84379199 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84379219) 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 7 ways as a sum of consecutive naturals, for example, 2812626 + ... + 2812655.

It is an arithmetic number, because the mean of its divisors is an integer number (16875846).

Almost surely, 2^84379215 is an apocalyptic number.

84379215 is a deficient number, since it is larger than the sum of its proper divisors (50627553).

84379215 is a wasteful number, since it uses less digits than its factorization.

84379215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5625289.

The product of its digits is 60480, while the sum is 39.

The square root of 84379215 is about 9185.8159681108. The cubic root of 84379215 is about 438.6099641568.

The spelling of 84379215 in words is "eighty-four million, three hundred seventy-nine thousand, two hundred fifteen".