199016449 has 4 divisors (see below), whose sum is σ = 199044864. Its totient is φ = 198988036.

The previous prime is 199016443. The next prime is 199016453. The reversal of 199016449 is 944610991.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 199016449 - 2¹⁷ = 198885377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199016443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4584 + ... + 20470.

It is an arithmetic number, because the mean of its divisors is an integer number (49761216).

It is a Proth number, since it is equal to 12147 ⋅ 2¹⁴ + 1 and 12147 < 2¹⁴.

Almost surely, 2^199016449 is an apocalyptic number.

It is an amenable number.

199016449 is a deficient number, since it is larger than the sum of its proper divisors (28415).

199016449 is a wasteful number, since it uses less digits than its factorization.

199016449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28414.

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 199016449 is about 14107.3189869656. The cubic root of 199016449 is about 583.8433316924.

The spelling of 199016449 in words is "one hundred ninety-nine million, sixteen thousand, four hundred forty-nine".