84689444 has 48 divisors (see below), whose sum is σ = 183052800. Its totient is φ = 34151040.

The previous prime is 84689431. The next prime is 84689447. The reversal of 84689444 is 44498648.

It is not an unprimeable number, because it can be changed into a prime (84689447) 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, 21509 + ... + 25139.

It is an arithmetic number, because the mean of its divisors is an integer number (3813600).

Almost surely, 2^84689444 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 84689444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91526400).

84689444 is an abundant number, since it is smaller than the sum of its proper divisors (98363356).

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

84689444 is a wasteful number, since it uses less digits than its factorization.

84689444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3673 (or 3657 counting only the distinct ones).

The product of its digits is 884736, while the sum is 47.

The square root of 84689444 is about 9202.6867815872. The cubic root of 84689444 is about 439.1468385218.

The spelling of 84689444 in words is "eighty-four million, six hundred eighty-nine thousand, four hundred forty-four".