199044761 has 2 divisors, whose sum is σ = 199044762. Its totient is φ = 199044760.

The previous prime is 199044751. The next prime is 199044767. The reversal of 199044761 is 167440991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 162078361 + 36966400 = 12731^2 + 6080^2 .

It is a cyclic number.

It is not a de Polignac number, because 199044761 - 2¹⁴ = 199028377 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (199044767) 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 as a sum of consecutive naturals, namely, 99522380 + 99522381.

It is an arithmetic number, because the mean of its divisors is an integer number (99522381).

Almost surely, 2^199044761 is an apocalyptic number.

It is an amenable number.

199044761 is a deficient number, since it is larger than the sum of its proper divisors (1).

199044761 is an equidigital number, since it uses as much as digits as its factorization.

199044761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 199044761 is about 14108.3224020434. The cubic root of 199044761 is about 583.8710161522.

The spelling of 199044761 in words is "one hundred ninety-nine million, forty-four thousand, seven hundred sixty-one".