209794052 has 12 divisors (see below), whose sum is σ = 395381196. Its totient is φ = 96828000.

The previous prime is 209794051. The next prime is 209794111. The reversal of 209794052 is 250497902.

It can be written as a sum of positive squares in 2 ways, for example, as 23580736 + 186213316 = 4856^2 + 13646^2 .

It is a junction number, because it is equal to n+sod(n) for n = 209793997 and 209794015.

It is not an unprimeable number, because it can be changed into a prime (209794051) 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, 2017199 + ... + 2017302.

It is an arithmetic number, because the mean of its divisors is an integer number (32948433).

Almost surely, 2^209794052 is an apocalyptic number.

It is an amenable number.

209794052 is a deficient number, since it is larger than the sum of its proper divisors (185587144).

209794052 is a wasteful number, since it uses less digits than its factorization.

209794052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4034518 (or 4034516 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 209794052 is about 14484.2691220510. The cubic root of 209794052 is about 594.1978239701.

The spelling of 209794052 in words is "two hundred nine million, seven hundred ninety-four thousand, fifty-two".