84746579 has 2 divisors, whose sum is σ = 84746580. Its totient is φ = 84746578.

The previous prime is 84746561. The next prime is 84746587. The reversal of 84746579 is 97564748.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84746579 is a prime.

It is not a weakly prime, because it can be changed into another prime (84748579) 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, 42373289 + 42373290.

It is an arithmetic number, because the mean of its divisors is an integer number (42373290).

Almost surely, 2^84746579 is an apocalyptic number.

84746579 is a deficient number, since it is larger than the sum of its proper divisors (1).

84746579 is an equidigital number, since it uses as much as digits as its factorization.

84746579 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1693440, while the sum is 50.

The square root of 84746579 is about 9205.7905146706. The cubic root of 84746579 is about 439.2455718591.

The spelling of 84746579 in words is "eighty-four million, seven hundred forty-six thousand, five hundred seventy-nine".