199393253 has 2 divisors, whose sum is σ = 199393254. Its totient is φ = 199393252.

The previous prime is 199393219. The next prime is 199393319. The reversal of 199393253 is 352393991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125037124 + 74356129 = 11182^2 + 8623^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199393253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199303253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99696626 + 99696627.

It is an arithmetic number, because the mean of its divisors is an integer number (99696627).

Almost surely, 2^199393253 is an apocalyptic number.

It is an amenable number.

199393253 is a deficient number, since it is larger than the sum of its proper divisors (1).

199393253 is an equidigital number, since it uses as much as digits as its factorization.

199393253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 196830, while the sum is 44.

The square root of 199393253 is about 14120.6675833687. The cubic root of 199393253 is about 584.2115689393.

The spelling of 199393253 in words is "one hundred ninety-nine million, three hundred ninety-three thousand, two hundred fifty-three".