84221453 has 2 divisors, whose sum is σ = 84221454. Its totient is φ = 84221452.

The previous prime is 84221443. The next prime is 84221483. The reversal of 84221453 is 35412248.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51811204 + 32410249 = 7198^2 + 5693^2 .

It is a cyclic number.

It is not a de Polignac number, because 84221453 - 2⁴ = 84221437 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84221443) 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 as a sum of consecutive naturals, namely, 42110726 + 42110727.

It is an arithmetic number, because the mean of its divisors is an integer number (42110727).

Almost surely, 2^84221453 is an apocalyptic number.

It is an amenable number.

84221453 is a deficient number, since it is larger than the sum of its proper divisors (1).

84221453 is an equidigital number, since it uses as much as digits as its factorization.

84221453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7680, while the sum is 29.

The square root of 84221453 is about 9177.2246894146. The cubic root of 84221453 is about 438.3364404193.

The spelling of 84221453 in words is "eighty-four million, two hundred twenty-one thousand, four hundred fifty-three".