84400788 has 48 divisors (see below), whose sum is σ = 204684480. Its totient is φ = 27035904.

The previous prime is 84400781. The next prime is 84400807. The reversal of 84400788 is 88700448.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84400781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98056 + ... + 98912.

It is an arithmetic number, because the mean of its divisors is an integer number (4264260).

Almost surely, 2^84400788 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 84400788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102342240).

84400788 is an abundant number, since it is smaller than the sum of its proper divisors (120283692).

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

84400788 is a wasteful number, since it uses less digits than its factorization.

84400788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1176 (or 1174 counting only the distinct ones).

The product of its (nonzero) digits is 57344, while the sum is 39.

The square root of 84400788 is about 9186.9901491185. The cubic root of 84400788 is about 438.6473403696.

The spelling of 84400788 in words is "eighty-four million, four hundred thousand, seven hundred eighty-eight".