84885679 has 2 divisors, whose sum is σ = 84885680. Its totient is φ = 84885678.

The previous prime is 84885667. The next prime is 84885727. The reversal of 84885679 is 97658848.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84885679 - 2¹⁹ = 84361391 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84885079) 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, 42442839 + 42442840.

It is an arithmetic number, because the mean of its divisors is an integer number (42442840).

Almost surely, 2^84885679 is an apocalyptic number.

84885679 is a deficient number, since it is larger than the sum of its proper divisors (1).

84885679 is an equidigital number, since it uses as much as digits as its factorization.

84885679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3870720, while the sum is 55.

The square root of 84885679 is about 9213.3424445203. The cubic root of 84885679 is about 439.4857611451.

The spelling of 84885679 in words is "eighty-four million, eight hundred eighty-five thousand, six hundred seventy-nine".