84444321 has 32 divisors (see below), whose sum is σ = 130370688. Its totient is φ = 48153600.

The previous prime is 84444319. The next prime is 84444329. The reversal of 84444321 is 12344448.

It is not a de Polignac number, because 84444321 - 2¹ = 84444319 is a prime.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (84444329) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43471 + ... + 45371.

It is an arithmetic number, because the mean of its divisors is an integer number (4074084).

Almost surely, 2^84444321 is an apocalyptic number.

It is an amenable number.

84444321 is a deficient number, since it is larger than the sum of its proper divisors (45926367).

84444321 is a wasteful number, since it uses less digits than its factorization.

84444321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2001.

The product of its digits is 12288, while the sum is 30.

The square root of 84444321 is about 9189.3591180234. The cubic root of 84444321 is about 438.7227439014.

Adding to 84444321 its reverse (12344448), we get a palindrome (96788769).

The spelling of 84444321 in words is "eighty-four million, four hundred forty-four thousand, three hundred twenty-one".