84238321 has 2 divisors, whose sum is σ = 84238322. Its totient is φ = 84238320.

The previous prime is 84238291. The next prime is 84238331. The reversal of 84238321 is 12383248.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43086096 + 41152225 = 6564^2 + 6415^2 .

It is a cyclic number.

It is not a de Polignac number, because 84238321 - 2⁵ = 84238289 is a prime.

It is not a weakly prime, because it can be changed into another prime (84238331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42119160 + 42119161.

It is an arithmetic number, because the mean of its divisors is an integer number (42119161).

Almost surely, 2^84238321 is an apocalyptic number.

It is an amenable number.

84238321 is a deficient number, since it is larger than the sum of its proper divisors (1).

84238321 is an equidigital number, since it uses as much as digits as its factorization.

84238321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9216, while the sum is 31.

The square root of 84238321 is about 9178.1436576249. The cubic root of 84238321 is about 438.3657020277.

The spelling of 84238321 in words is "eighty-four million, two hundred thirty-eight thousand, three hundred twenty-one".