199353961 has 2 divisors, whose sum is σ = 199353962. Its totient is φ = 199353960.

The previous prime is 199353941. The next prime is 199353967. The reversal of 199353961 is 169353991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 163353961 + 36000000 = 12781^2 + 6000^2 .

It is a cyclic number.

It is not a de Polignac number, because 199353961 - 2⁹ = 199353449 is a prime.

It is not a weakly prime, because it can be changed into another prime (199353967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99676980 + 99676981.

It is an arithmetic number, because the mean of its divisors is an integer number (99676981).

Almost surely, 2^199353961 is an apocalyptic number.

It is an amenable number.

199353961 is a deficient number, since it is larger than the sum of its proper divisors (1).

199353961 is an equidigital number, since it uses as much as digits as its factorization.

199353961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 196830, while the sum is 46.

The square root of 199353961 is about 14119.2762208266. The cubic root of 199353961 is about 584.1731919321.

The spelling of 199353961 in words is "one hundred ninety-nine million, three hundred fifty-three thousand, nine hundred sixty-one".