84505479 has 8 divisors (see below), whose sum is σ = 114800112. Its totient is φ = 55273920.

The previous prime is 84505471. The next prime is 84505493. The reversal of 84505479 is 97450548.

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

It is not a de Polignac number, because 84505479 - 2³ = 84505471 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84505479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84505471) 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, 265582 + ... + 265899.

It is an arithmetic number, because the mean of its divisors is an integer number (14350014).

Almost surely, 2^84505479 is an apocalyptic number.

84505479 is a deficient number, since it is larger than the sum of its proper divisors (30294633).

84505479 is a wasteful number, since it uses less digits than its factorization.

84505479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531537.

The product of its (nonzero) digits is 201600, while the sum is 42.

The square root of 84505479 is about 9192.6861689062. The cubic root of 84505479 is about 438.8286319406.

The spelling of 84505479 in words is "eighty-four million, five hundred five thousand, four hundred seventy-nine".