84223644 has 48 divisors (see below), whose sum is σ = 209323296. Its totient is φ = 26265600.

The previous prime is 84223639. The next prime is 84223649. The reversal of 84223644 is 44632248.

It is an interprime number because it is at equal distance from previous prime (84223639) and next prime (84223649).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84223649) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 35784 + ... + 38064.

It is an arithmetic number, because the mean of its divisors is an integer number (4360902).

Almost surely, 2^84223644 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 84223644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104661648).

84223644 is an abundant number, since it is smaller than the sum of its proper divisors (125099652).

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

84223644 is a wasteful number, since it uses less digits than its factorization.

84223644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2486 (or 2484 counting only the distinct ones).

The product of its digits is 36864, while the sum is 33.

The square root of 84223644 is about 9177.3440602388. The cubic root of 84223644 is about 438.3402414573.

The spelling of 84223644 in words is "eighty-four million, two hundred twenty-three thousand, six hundred forty-four".