84509244 has 120 divisors (see below), whose sum is σ = 238447440. Its totient is φ = 26002944.

The previous prime is 84509203. The next prime is 84509263. The reversal of 84509244 is 44290548.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 84509199 and 84509208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 368922 + ... + 369150.

It is an arithmetic number, because the mean of its divisors is an integer number (1987062).

Almost surely, 2^84509244 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 84509244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119223720).

84509244 is an abundant number, since it is smaller than the sum of its proper divisors (153938196).

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

84509244 is a wasteful number, since it uses less digits than its factorization.

84509244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329 (or 318 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 84509244 is about 9192.8909489888. The cubic root of 84509244 is about 438.8351489353.

The spelling of 84509244 in words is "eighty-four million, five hundred nine thousand, two hundred forty-four".