209092969 has 2 divisors, whose sum is σ = 209092970. Its totient is φ = 209092968.

The previous prime is 209092903. The next prime is 209092973. The reversal of 209092969 is 969290902.

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., 209091600 + 1369 = 14460^2 + 37^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-209092969 is a prime.

It is a super-2 number, since 2×209092969² = 87439739370469922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (209092999) 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 as a sum of consecutive naturals, namely, 104546484 + 104546485.

It is an arithmetic number, because the mean of its divisors is an integer number (104546485).

Almost surely, 2^209092969 is an apocalyptic number.

It is an amenable number.

209092969 is a deficient number, since it is larger than the sum of its proper divisors (1).

209092969 is an equidigital number, since it uses as much as digits as its factorization.

209092969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 157464, while the sum is 46.

The square root of 209092969 is about 14460.0473374052. The cubic root of 209092969 is about 593.5351949257.

It can be divided in two parts, 2090 and 92969, that added together give a palindrome (95059).

The spelling of 209092969 in words is "two hundred nine million, ninety-two thousand, nine hundred sixty-nine".