199995941 has 2 divisors, whose sum is σ = 199995942. Its totient is φ = 199995940.

The previous prime is 199995937. The next prime is 199995949. The reversal of 199995941 is 149599991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125104225 + 74891716 = 11185^2 + 8654^2 .

It is a cyclic number.

It is not a de Polignac number, because 199995941 - 2² = 199995937 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199995949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99997970 + 99997971.

It is an arithmetic number, because the mean of its divisors is an integer number (99997971).

Almost surely, 2^199995941 is an apocalyptic number.

It is an amenable number.

199995941 is a deficient number, since it is larger than the sum of its proper divisors (1).

199995941 is an equidigital number, since it uses as much as digits as its factorization.

199995941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1180980, while the sum is 56.

The square root of 199995941 is about 14141.9921156816. The cubic root of 199995941 is about 584.7995914198.

The spelling of 199995941 in words is "one hundred ninety-nine million, nine hundred ninety-five thousand, nine hundred forty-one".