84558449 has 2 divisors, whose sum is σ = 84558450. Its totient is φ = 84558448.

The previous prime is 84558443. The next prime is 84558451. The reversal of 84558449 is 94485548.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80013025 + 4545424 = 8945^2 + 2132^2 .

It is a cyclic number.

It is not a de Polignac number, because 84558449 - 2⁴ = 84558433 is a prime.

Together with 84558451, 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 (84558443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42279224 + 42279225.

It is an arithmetic number, because the mean of its divisors is an integer number (42279225).

Almost surely, 2^84558449 is an apocalyptic number.

It is an amenable number.

84558449 is a deficient number, since it is larger than the sum of its proper divisors (1).

84558449 is an equidigital number, since it uses as much as digits as its factorization.

84558449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 921600, while the sum is 47.

The square root of 84558449 is about 9195.5668123286. The cubic root of 84558449 is about 438.9203021211.

The spelling of 84558449 in words is "eighty-four million, five hundred fifty-eight thousand, four hundred forty-nine".