84942853 has 2 divisors, whose sum is σ = 84942854. Its totient is φ = 84942852.

The previous prime is 84942817. The next prime is 84942859. The reversal of 84942853 is 35824948.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75220929 + 9721924 = 8673^2 + 3118^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84942853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84942859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42471426 + 42471427.

It is an arithmetic number, because the mean of its divisors is an integer number (42471427).

Almost surely, 2^84942853 is an apocalyptic number.

It is an amenable number.

84942853 is a deficient number, since it is larger than the sum of its proper divisors (1).

84942853 is an equidigital number, since it uses as much as digits as its factorization.

84942853 is an evil number, because the sum of its binary digits is even.

The product of its digits is 276480, while the sum is 43.

The square root of 84942853 is about 9216.4447049825. Note that the first 3 decimals coincide. The cubic root of 84942853 is about 439.5844095858.

The spelling of 84942853 in words is "eighty-four million, nine hundred forty-two thousand, eight hundred fifty-three".