209030933 has 2 divisors, whose sum is σ = 209030934. Its totient is φ = 209030932.

The previous prime is 209030911. The next prime is 209030947. The reversal of 209030933 is 339030902.

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., 187333969 + 21696964 = 13687^2 + 4658^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-209030933 is a prime.

It is equal to p_11550881 and since 209030933 and 11550881 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 209030896 and 209030905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (209030953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104515466 + 104515467.

It is an arithmetic number, because the mean of its divisors is an integer number (104515467).

Almost surely, 2^209030933 is an apocalyptic number.

It is an amenable number.

209030933 is a deficient number, since it is larger than the sum of its proper divisors (1).

209030933 is an equidigital number, since it uses as much as digits as its factorization.

209030933 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4374, while the sum is 29.

The square root of 209030933 is about 14457.9020953941. The cubic root of 209030933 is about 593.4764902714.

The spelling of 209030933 in words is "two hundred nine million, thirty thousand, nine hundred thirty-three".