199814247 has 12 divisors (see below), whose sum is σ = 289018704. Its totient is φ = 133025760.

The previous prime is 199814239. The next prime is 199814269. The reversal of 199814247 is 742418991.

It is a happy number.

It is not a de Polignac number, because 199814247 - 2³ = 199814239 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199814207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8254 + ... + 21627.

It is an arithmetic number, because the mean of its divisors is an integer number (24084892).

Almost surely, 2^199814247 is an apocalyptic number.

199814247 is a deficient number, since it is larger than the sum of its proper divisors (89204457).

199814247 is a wasteful number, since it uses less digits than its factorization.

199814247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30630 (or 30627 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 199814247 is about 14135.5667378425. The cubic root of 199814247 is about 584.6224432075.

The spelling of 199814247 in words is "one hundred ninety-nine million, eight hundred fourteen thousand, two hundred forty-seven".