199952069 has 2 divisors, whose sum is σ = 199952070. Its totient is φ = 199952068.

The previous prime is 199952059. The next prime is 199952089. The reversal of 199952069 is 960259991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 194239969 + 5712100 = 13937^2 + 2390^2 .

It is a cyclic number.

It is not a de Polignac number, because 199952069 - 2⁸ = 199951813 is a prime.

It is a super-2 number, since 2×199952069² = 79961659794761522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199952009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99976034 + 99976035.

It is an arithmetic number, because the mean of its divisors is an integer number (99976035).

Almost surely, 2^199952069 is an apocalyptic number.

It is an amenable number.

199952069 is a deficient number, since it is larger than the sum of its proper divisors (1).

199952069 is an equidigital number, since it uses as much as digits as its factorization.

199952069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 393660, while the sum is 50.

The square root of 199952069 is about 14140.4409054315. The cubic root of 199952069 is about 584.7568268787.

The spelling of 199952069 in words is "one hundred ninety-nine million, nine hundred fifty-two thousand, sixty-nine".