85500479 has 4 divisors (see below), whose sum is σ = 85529280. Its totient is φ = 85471680.

The previous prime is 85500461. The next prime is 85500491. The reversal of 85500479 is 97400558.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85500479 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 (85500979) 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, 9359 + ... + 16080.

It is an arithmetic number, because the mean of its divisors is an integer number (21382320).

Almost surely, 2^85500479 is an apocalyptic number.

85500479 is a deficient number, since it is larger than the sum of its proper divisors (28801).

85500479 is a wasteful number, since it uses less digits than its factorization.

85500479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28800.

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 85500479 is about 9246.6469057708. The cubic root of 85500479 is about 440.5442284352.

The spelling of 85500479 in words is "eighty-five million, five hundred thousand, four hundred seventy-nine".