84630853 has 2 divisors, whose sum is σ = 84630854. Its totient is φ = 84630852.

The previous prime is 84630827. The next prime is 84630893. The reversal of 84630853 is 35803648.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79441569 + 5189284 = 8913^2 + 2278^2 .

It is a cyclic number.

It is not a de Polignac number, because 84630853 - 2¹³ = 84622661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84630893) 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, 42315426 + 42315427.

It is an arithmetic number, because the mean of its divisors is an integer number (42315427).

Almost surely, 2^84630853 is an apocalyptic number.

It is an amenable number.

84630853 is a deficient number, since it is larger than the sum of its proper divisors (1).

84630853 is an equidigital number, since it uses as much as digits as its factorization.

84630853 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 84630853 is about 9199.5028670032. The cubic root of 84630853 is about 439.0455429840.

The spelling of 84630853 in words is "eighty-four million, six hundred thirty thousand, eight hundred fifty-three".