84581459 has 2 divisors, whose sum is σ = 84581460. Its totient is φ = 84581458.

The previous prime is 84581449. The next prime is 84581461. The reversal of 84581459 is 95418548.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84581459 - 2¹⁶ = 84515923 is a prime.

Together with 84581461, 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 (84581449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42290729 + 42290730.

It is an arithmetic number, because the mean of its divisors is an integer number (42290730).

Almost surely, 2^84581459 is an apocalyptic number.

84581459 is a deficient number, since it is larger than the sum of its proper divisors (1).

84581459 is an equidigital number, since it uses as much as digits as its factorization.

84581459 is an evil number, because the sum of its binary digits is even.

The product of its digits is 230400, while the sum is 44.

The square root of 84581459 is about 9196.8178735908. The cubic root of 84581459 is about 438.9601114298.

The spelling of 84581459 in words is "eighty-four million, five hundred eighty-one thousand, four hundred fifty-nine".