84449988 has 72 divisors (see below), whose sum is σ = 248609088. Its totient is φ = 23669568.

The previous prime is 84449987. The next prime is 84450013. The reversal of 84449988 is 88994448.

It is not an unprimeable number, because it can be changed into a prime (84449987) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10195 + ... + 16517.

It is an arithmetic number, because the mean of its divisors is an integer number (3452904).

Almost surely, 2^84449988 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 84449988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124304544).

84449988 is an abundant number, since it is smaller than the sum of its proper divisors (164159100).

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

84449988 is a wasteful number, since it uses less digits than its factorization.

84449988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6393 (or 6388 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 54.

The square root of 84449988 is about 9189.6674586189. The cubic root of 84449988 is about 438.7325578086.

The spelling of 84449988 in words is "eighty-four million, four hundred forty-nine thousand, nine hundred eighty-eight".