84455417 has 2 divisors, whose sum is σ = 84455418. Its totient is φ = 84455416.

The previous prime is 84455383. The next prime is 84455419. The reversal of 84455417 is 71455448.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84345856 + 109561 = 9184^2 + 331^2 .

It is a cyclic number.

It is not a de Polignac number, because 84455417 - 2¹⁰ = 84454393 is a prime.

Together with 84455419, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (84455419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42227708 + 42227709.

It is an arithmetic number, because the mean of its divisors is an integer number (42227709).

Almost surely, 2^84455417 is an apocalyptic number.

It is an amenable number.

84455417 is a deficient number, since it is larger than the sum of its proper divisors (1).

84455417 is an equidigital number, since it uses as much as digits as its factorization.

84455417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 89600, while the sum is 38.

The square root of 84455417 is about 9189.9628399684. The cubic root of 84455417 is about 438.7419591441.

The spelling of 84455417 in words is "eighty-four million, four hundred fifty-five thousand, four hundred seventeen".