199755473 has 2 divisors, whose sum is σ = 199755474. Its totient is φ = 199755472.

The previous prime is 199755469. The next prime is 199755497. The reversal of 199755473 is 374557991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 189971089 + 9784384 = 13783^2 + 3128^2 .

It is a cyclic number.

It is not a de Polignac number, because 199755473 - 2² = 199755469 is a prime.

It is not a weakly prime, because it can be changed into another prime (199755443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99877736 + 99877737.

It is an arithmetic number, because the mean of its divisors is an integer number (99877737).

Almost surely, 2^199755473 is an apocalyptic number.

It is an amenable number.

199755473 is a deficient number, since it is larger than the sum of its proper divisors (1).

199755473 is an equidigital number, since it uses as much as digits as its factorization.

199755473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1190700, while the sum is 50.

The square root of 199755473 is about 14133.4876445978. The cubic root of 199755473 is about 584.5651166830.

The spelling of 199755473 in words is "one hundred ninety-nine million, seven hundred fifty-five thousand, four hundred seventy-three".