84391552 has 64 divisors (see below), whose sum is σ = 194322240. Its totient is φ = 35758080.

The previous prime is 84391547. The next prime is 84391591. The reversal of 84391552 is 25519348.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86427 + ... + 87397.

It is an arithmetic number, because the mean of its divisors is an integer number (3036285).

Almost surely, 2^84391552 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 84391552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97161120).

84391552 is an abundant number, since it is smaller than the sum of its proper divisors (109930688).

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

84391552 is an equidigital number, since it uses as much as digits as its factorization.

84391552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1089 (or 1077 counting only the distinct ones).

The product of its digits is 43200, while the sum is 37.

The square root of 84391552 is about 9186.4874680152. The cubic root of 84391552 is about 438.6313393554.

The spelling of 84391552 in words is "eighty-four million, three hundred ninety-one thousand, five hundred fifty-two".