85259947 has 4 divisors (see below), whose sum is σ = 90275256. Its totient is φ = 80244640.

The previous prime is 85259939. The next prime is 85259957. The reversal of 85259947 is 74995258.

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

It is a cyclic number.

It is not a de Polignac number, because 85259947 - 2³ = 85259939 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85259947.

It is not an unprimeable number, because it can be changed into a prime (85259957) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2507629 + ... + 2507662.

It is an arithmetic number, because the mean of its divisors is an integer number (22568814).

Almost surely, 2^85259947 is an apocalyptic number.

85259947 is a deficient number, since it is larger than the sum of its proper divisors (5015309).

85259947 is a wasteful number, since it uses less digits than its factorization.

85259947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5015308.

The product of its digits is 907200, while the sum is 49.

The square root of 85259947 is about 9233.6313008480. The cubic root of 85259947 is about 440.1307238992.

The spelling of 85259947 in words is "eighty-five million, two hundred fifty-nine thousand, nine hundred forty-seven".