84421097 has 2 divisors, whose sum is σ = 84421098. Its totient is φ = 84421096.

The previous prime is 84421061. The next prime is 84421151. The reversal of 84421097 is 79012448.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50069776 + 34351321 = 7076^2 + 5861^2 .

It is a cyclic number.

It is not a de Polignac number, because 84421097 - 2⁸ = 84420841 is a prime.

It is not a weakly prime, because it can be changed into another prime (84421027) 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, 42210548 + 42210549.

It is an arithmetic number, because the mean of its divisors is an integer number (42210549).

Almost surely, 2^84421097 is an apocalyptic number.

It is an amenable number.

84421097 is a deficient number, since it is larger than the sum of its proper divisors (1).

84421097 is an equidigital number, since it uses as much as digits as its factorization.

84421097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 84421097 is about 9188.0953956737. The cubic root of 84421097 is about 438.6825208247.

The spelling of 84421097 in words is "eighty-four million, four hundred twenty-one thousand, ninety-seven".