209033764 has 9 divisors (see below), whose sum is σ = 365859697. Its totient is φ = 104502424.

The previous prime is 209033753. The next prime is 209033767. The reversal of 209033764 is 467330902.

The square root of 209033764 is 14458.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 208571364 + 462400 = 14442^2 + 680^2 .

It is a super-2 number, since 2×209033764² = 87390228984015392, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (209033767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 25302 + ... + 32530.

Almost surely, 2^209033764 is an apocalyptic number.

209033764 is the 14458-th square number.

It is an amenable number.

209033764 is a deficient number, since it is larger than the sum of its proper divisors (156825933).

209033764 is an frugal number, since it uses more digits than its factorization.

209033764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14462 (or 7231 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 34.

The cubic root of 209033764 is about 593.4791694991.

The spelling of 209033764 in words is "two hundred nine million, thirty-three thousand, seven hundred sixty-four".