209480533 has 2 divisors, whose sum is σ = 209480534. Its totient is φ = 209480532.

The previous prime is 209480497. The next prime is 209480549. The reversal of 209480533 is 335084902.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 188705169 + 20775364 = 13737^2 + 4558^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-209480533 is a prime.

It is a super-3 number, since 3×209480533³ (a number of 26 digits) contains 333 as substring.

It is equal to p_11574385 and since 209480533 and 11574385 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (209180533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104740266 + 104740267.

It is an arithmetic number, because the mean of its divisors is an integer number (104740267).

Almost surely, 2^209480533 is an apocalyptic number.

It is an amenable number.

209480533 is a deficient number, since it is larger than the sum of its proper divisors (1).

209480533 is an equidigital number, since it uses as much as digits as its factorization.

209480533 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 209480533 is about 14473.4423341512. The cubic root of 209480533 is about 593.9016840459.

The spelling of 209480533 in words is "two hundred nine million, four hundred eighty thousand, five hundred thirty-three".