80859853 has 2 divisors, whose sum is σ = 80859854. Its totient is φ = 80859852.

The previous prime is 80859851. The next prime is 80859887. The reversal of 80859853 is 35895808.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49533444 + 31326409 = 7038^2 + 5597^2 .

It is a cyclic number.

It is not a de Polignac number, because 80859853 - 2¹ = 80859851 is a prime.

Together with 80859851, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80859851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40429926 + 40429927.

It is an arithmetic number, because the mean of its divisors is an integer number (40429927).

Almost surely, 2^80859853 is an apocalyptic number.

It is an amenable number.

80859853 is a deficient number, since it is larger than the sum of its proper divisors (1).

80859853 is an equidigital number, since it uses as much as digits as its factorization.

80859853 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 345600, while the sum is 46.

The square root of 80859853 is about 8992.2106848094. The cubic root of 80859853 is about 432.4251875901.

The spelling of 80859853 in words is "eighty million, eight hundred fifty-nine thousand, eight hundred fifty-three".