199049759 has 4 divisors (see below), whose sum is σ = 199101240. Its totient is φ = 198998280.

The previous prime is 199049737. The next prime is 199049761. The reversal of 199049759 is 957940991.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 957940991 = 7 ⋅136848713.

It is a cyclic number.

It is not a de Polignac number, because 199049759 - 2¹⁶ = 198984223 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 199049759.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199049779) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19424 + ... + 27845.

It is an arithmetic number, because the mean of its divisors is an integer number (49775310).

Almost surely, 2^199049759 is an apocalyptic number.

199049759 is a deficient number, since it is larger than the sum of its proper divisors (51481).

199049759 is an equidigital number, since it uses as much as digits as its factorization.

199049759 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51480.

The product of its (nonzero) digits is 918540, while the sum is 53.

The square root of 199049759 is about 14108.4995304249. The cubic root of 199049759 is about 583.8759030981.

The spelling of 199049759 in words is "one hundred ninety-nine million, forty-nine thousand, seven hundred fifty-nine".