84455197 has 2 divisors, whose sum is σ = 84455198. Its totient is φ = 84455196.

The previous prime is 84455179. The next prime is 84455213. The reversal of 84455197 is 79155448.

Together with previous prime (84455179) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78747876 + 5707321 = 8874^2 + 2389^2 .

It is a cyclic number.

It is not a de Polignac number, because 84455197 - 2¹⁹ = 83930909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84455177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42227598 + 42227599.

It is an arithmetic number, because the mean of its divisors is an integer number (42227599).

Almost surely, 2^84455197 is an apocalyptic number.

It is an amenable number.

84455197 is a deficient number, since it is larger than the sum of its proper divisors (1).

84455197 is an equidigital number, since it uses as much as digits as its factorization.

84455197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 201600, while the sum is 43.

The square root of 84455197 is about 9189.9508703801. The cubic root of 84455197 is about 438.7415781805.

The spelling of 84455197 in words is "eighty-four million, four hundred fifty-five thousand, one hundred ninety-seven".