209080801 has 4 divisors (see below), whose sum is σ = 209131204. Its totient is φ = 209030400.

The previous prime is 209080799. The next prime is 209080819. The reversal of 209080801 is 108080902.

209080801 = 10224² + 10225².

209080801 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 104550625 + 104530176 = 10225^2 + 10224^2 .

It is a cyclic number.

It is not a de Polignac number, because 209080801 - 2¹ = 209080799 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 209080801.

It is not an unprimeable number, because it can be changed into a prime (209080831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18360 + ... + 27481.

It is an arithmetic number, because the mean of its divisors is an integer number (52282801).

Almost surely, 2^209080801 is an apocalyptic number.

209080801 is the 10225-th centered square number.

It is an amenable number.

209080801 is a deficient number, since it is larger than the sum of its proper divisors (50403).

209080801 is an equidigital number, since it uses as much as digits as its factorization.

209080801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50402.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 209080801 is about 14459.6265857732. The cubic root of 209080801 is about 593.5236812653.

The spelling of 209080801 in words is "two hundred nine million, eighty thousand, eight hundred one".