199766453 has 2 divisors, whose sum is σ = 199766454. Its totient is φ = 199766452.

The previous prime is 199766447. The next prime is 199766459. The reversal of 199766453 is 354667991.

It is a balanced prime because it is at equal distance from previous prime (199766447) and next prime (199766459).

It can be written as a sum of positive squares in only one way, i.e., 114425809 + 85340644 = 10697^2 + 9238^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199766453 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199766459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99883226 + 99883227.

It is an arithmetic number, because the mean of its divisors is an integer number (99883227).

Almost surely, 2^199766453 is an apocalyptic number.

It is an amenable number.

199766453 is a deficient number, since it is larger than the sum of its proper divisors (1).

199766453 is an equidigital number, since it uses as much as digits as its factorization.

199766453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1224720, while the sum is 50.

The square root of 199766453 is about 14133.8760784153. The cubic root of 199766453 is about 584.5758271236.

The spelling of 199766453 in words is "one hundred ninety-nine million, seven hundred sixty-six thousand, four hundred fifty-three".