85787944 has 16 divisors (see below), whose sum is σ = 175475520. Its totient is φ = 38994480.

The previous prime is 85787929. The next prime is 85787957. The reversal of 85787944 is 44978758.

It is a junction number, because it is equal to n+sod(n) for n = 85787891 and 85787900.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 487344 + ... + 487519.

It is an arithmetic number, because the mean of its divisors is an integer number (10967220).

Almost surely, 2^85787944 is an apocalyptic number.

It is an amenable number.

85787944 is an abundant number, since it is smaller than the sum of its proper divisors (89687576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85787944 is a wasteful number, since it uses less digits than its factorization.

85787944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974880 (or 974876 counting only the distinct ones).

The product of its digits is 2257920, while the sum is 52.

The square root of 85787944 is about 9262.1781455552. The cubic root of 85787944 is about 441.0374006532.

The spelling of 85787944 in words is "eighty-five million, seven hundred eighty-seven thousand, nine hundred forty-four".