85944487 has 16 divisors (see below), whose sum is σ = 93250080. Its totient is φ = 79074240.

The previous prime is 85944449. The next prime is 85944499. The reversal of 85944487 is 78444958.

It is a happy number.

It is not a de Polignac number, because 85944487 - 2¹⁵ = 85911719 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85944487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85944587) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1998688 + ... + 1998730.

It is an arithmetic number, because the mean of its divisors is an integer number (5828130).

Almost surely, 2^85944487 is an apocalyptic number.

85944487 is a deficient number, since it is larger than the sum of its proper divisors (7305593).

85944487 is an frugal number, since it uses more digits than its factorization.

85944487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195 (or 113 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 49.

The square root of 85944487 is about 9270.6249519652. The cubic root of 85944487 is about 441.3055011281.

It can be divided in two parts, 8 and 5944487, that added together give a palindrome (5944495).

The spelling of 85944487 in words is "eighty-five million, nine hundred forty-four thousand, four hundred eighty-seven".