85089744 has 80 divisors (see below), whose sum is σ = 245341440. Its totient is φ = 28235520.

The previous prime is 85089731. The next prime is 85089793. The reversal of 85089744 is 44798058.

It is a self number, because there is not a number n which added to its sum of digits gives 85089744.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185964 + ... + 186420.

It is an arithmetic number, because the mean of its divisors is an integer number (3066768).

Almost surely, 2^85089744 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85089744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122670720).

85089744 is an abundant number, since it is smaller than the sum of its proper divisors (160251696).

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

85089744 is a wasteful number, since it uses less digits than its factorization.

85089744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 905 (or 893 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 85089744 is about 9224.4102250496. The cubic root of 85089744 is about 439.8376536052.

The spelling of 85089744 in words is "eighty-five million, eighty-nine thousand, seven hundred forty-four".