85437047 has 8 divisors (see below), whose sum is σ = 86485200. Its totient is φ = 84395520.

The previous prime is 85437043. The next prime is 85437059. The reversal of 85437047 is 74073458.

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

It is a cyclic number.

It is not a de Polignac number, because 85437047 - 2² = 85437043 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 85437047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85437043) 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, 27272 + ... + 30242.

It is an arithmetic number, because the mean of its divisors is an integer number (10810650).

Almost surely, 2^85437047 is an apocalyptic number.

85437047 is a deficient number, since it is larger than the sum of its proper divisors (1048153).

85437047 is a wasteful number, since it uses less digits than its factorization.

85437047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3313.

The product of its (nonzero) digits is 94080, while the sum is 38.

The square root of 85437047 is about 9243.2162692431. The cubic root of 85437047 is about 440.4352562778.

The spelling of 85437047 in words is "eighty-five million, four hundred thirty-seven thousand, forty-seven".