199263946 has 16 divisors (see below), whose sum is σ = 341809344. Its totient is φ = 85345344.

The previous prime is 199263943. The next prime is 199263947. The reversal of 199263946 is 649362991.

It is a super-2 number, since 2×199263946² = 79412240350981832, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 199263946.

It is not an unprimeable number, because it can be changed into a prime (199263943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25746 + ... + 32578.

It is an arithmetic number, because the mean of its divisors is an integer number (21363084).

Almost surely, 2^199263946 is an apocalyptic number.

199263946 is a deficient number, since it is larger than the sum of its proper divisors (142545398).

199263946 is a wasteful number, since it uses less digits than its factorization.

199263946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8925.

The product of its digits is 629856, while the sum is 49.

The square root of 199263946 is about 14116.0881975142. The cubic root of 199263946 is about 584.0852540984.

The spelling of 199263946 in words is "one hundred ninety-nine million, two hundred sixty-three thousand, nine hundred forty-six".