199226669 has 2 divisors, whose sum is σ = 199226670. Its totient is φ = 199226668.

The previous prime is 199226659. The next prime is 199226681. The reversal of 199226669 is 966622991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 185313769 + 13912900 = 13613^2 + 3730^2 .

It is an emirp because it is prime and its reverse (966622991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 199226669 - 2²⁴ = 182449453 is a prime.

It is a super-2 number, since 2×199226669² = 79382531281671122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199226659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99613334 + 99613335.

It is an arithmetic number, because the mean of its divisors is an integer number (99613335).

Almost surely, 2^199226669 is an apocalyptic number.

It is an amenable number.

199226669 is a deficient number, since it is larger than the sum of its proper divisors (1).

199226669 is an equidigital number, since it uses as much as digits as its factorization.

199226669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 629856, while the sum is 50.

The square root of 199226669 is about 14114.7677628787. The cubic root of 199226669 is about 584.0488295398.

The spelling of 199226669 in words is "one hundred ninety-nine million, two hundred twenty-six thousand, six hundred sixty-nine".