85117479 has 8 divisors (see below), whose sum is σ = 113783280. Its totient is φ = 56598336.

The previous prime is 85117477. The next prime is 85117507. The reversal of 85117479 is 97471158.

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

It is not a de Polignac number, because 85117479 - 2¹ = 85117477 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85117479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85117477) 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, 35302 + ... + 37635.

It is an arithmetic number, because the mean of its divisors is an integer number (14222910).

Almost surely, 2^85117479 is an apocalyptic number.

85117479 is a deficient number, since it is larger than the sum of its proper divisors (28665801).

85117479 is a wasteful number, since it uses less digits than its factorization.

85117479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73329.

The product of its digits is 70560, while the sum is 42.

The square root of 85117479 is about 9225.9134507104. The cubic root of 85117479 is about 439.8854367714.

The spelling of 85117479 in words is "eighty-five million, one hundred seventeen thousand, four hundred seventy-nine".