85004047 has 4 divisors (see below), whose sum is σ = 86168560. Its totient is φ = 83839536.

The previous prime is 85004041. The next prime is 85004071. The reversal of 85004047 is 74040058.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74040058 = 2 ⋅37020029.

It is a cyclic number.

It is not a de Polignac number, because 85004047 - 2¹¹ = 85001999 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 (85004041) 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, 582147 + ... + 582292.

It is an arithmetic number, because the mean of its divisors is an integer number (21542140).

Almost surely, 2^85004047 is an apocalyptic number.

85004047 is a deficient number, since it is larger than the sum of its proper divisors (1164513).

85004047 is a wasteful number, since it uses less digits than its factorization.

85004047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1164512.

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 85004047 is about 9219.7639340712. The cubic root of 85004047 is about 439.6899451324.

The spelling of 85004047 in words is "eighty-five million, four thousand, forty-seven".