199966224 has 20 divisors (see below), whose sum is σ = 516579536. Its totient is φ = 66655392.

The previous prime is 199966183. The next prime is 199966253. The reversal of 199966224 is 422669991.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 4165963 = 199966224 / (1 + 9 + 9 + 9 + 6 + 6 + 2 + 2 + 4).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2082934 + ... + 2083029.

Almost surely, 2^199966224 is an apocalyptic number.

It is an amenable number.

199966224 is an abundant number, since it is smaller than the sum of its proper divisors (316613312).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

199966224 is a wasteful number, since it uses less digits than its factorization.

199966224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4165974 (or 4165968 counting only the distinct ones).

The product of its digits is 419904, while the sum is 48.

The square root of 199966224 is about 14140.9414113771. The cubic root of 199966224 is about 584.7706252482.

The spelling of 199966224 in words is "one hundred ninety-nine million, nine hundred sixty-six thousand, two hundred twenty-four".