20080849 has 2 divisors, whose sum is σ = 20080850. Its totient is φ = 20080848.

The previous prime is 20080813. The next prime is 20080861. The reversal of 20080849 is 94808002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15210000 + 4870849 = 3900^2 + 2207^2 .

It is a cyclic number.

It is not a de Polignac number, because 20080849 - 2¹⁵ = 20048081 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20080849.

It is not a weakly prime, because it can be changed into another prime (20081849) 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, 10040424 + 10040425.

It is an arithmetic number, because the mean of its divisors is an integer number (10040425).

Almost surely, 2^20080849 is an apocalyptic number.

It is an amenable number.

20080849 is a deficient number, since it is larger than the sum of its proper divisors (1).

20080849 is an equidigital number, since it uses as much as digits as its factorization.

20080849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 20080849 is about 4481.1660312914. The cubic root of 20080849 is about 271.8070331533.

The spelling of 20080849 in words is "twenty million, eighty thousand, eight hundred forty-nine".