84234321 has 6 divisors (see below), whose sum is σ = 121671810. Its totient is φ = 56156208.

The previous prime is 84234307. The next prime is 84234361. The reversal of 84234321 is 12343248.

It can be written as a sum of positive squares in only one way, i.e., 71166096 + 13068225 = 8436^2 + 3615^2 .

It is not a de Polignac number, because 84234321 - 2⁵ = 84234289 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84234361) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4679676 + ... + 4679693.

It is an arithmetic number, because the mean of its divisors is an integer number (20278635).

Almost surely, 2^84234321 is an apocalyptic number.

It is an amenable number.

84234321 is a deficient number, since it is larger than the sum of its proper divisors (37437489).

84234321 is a wasteful number, since it uses less digits than its factorization.

84234321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9359375 (or 9359372 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 84234321 is about 9177.9257460496. The cubic root of 84234321 is about 438.3587634177.

Adding to 84234321 its reverse (12343248), we get a palindrome (96577569).

The spelling of 84234321 in words is "eighty-four million, two hundred thirty-four thousand, three hundred twenty-one".