84229452 has 72 divisors (see below), whose sum is σ = 220985856. Its totient is φ = 27032544.

The previous prime is 84229447. The next prime is 84229459. The reversal of 84229452 is 25492248.

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

It is not an unprimeable number, because it can be changed into a prime (84229459) 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, 112993 + ... + 113735.

It is an arithmetic number, because the mean of its divisors is an integer number (3069248).

Almost surely, 2^84229452 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 84229452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110492928).

84229452 is an abundant number, since it is smaller than the sum of its proper divisors (136756404).

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

84229452 is a wasteful number, since it uses less digits than its factorization.

84229452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 867 (or 862 counting only the distinct ones).

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

The square root of 84229452 is about 9177.6604862024. The cubic root of 84229452 is about 438.3503170983.

It can be divided in two parts, 84229 and 452, that added together give a square (84681 = 291²).

The spelling of 84229452 in words is "eighty-four million, two hundred twenty-nine thousand, four hundred fifty-two".