199971076 has 6 divisors (see below), whose sum is σ = 349949390. Its totient is φ = 99985536.

The previous prime is 199970999. The next prime is 199971077. The reversal of 199971076 is 670179991.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 180257476 + 19713600 = 13426^2 + 4440^2 .

It is not an unprimeable number, because it can be changed into a prime (199971077) 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, 24996381 + ... + 24996388.

Almost surely, 2^199971076 is an apocalyptic number.

It is an amenable number.

199971076 is a deficient number, since it is larger than the sum of its proper divisors (149978314).

199971076 is a wasteful number, since it uses less digits than its factorization.

199971076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49992773 (or 49992771 counting only the distinct ones).

The product of its (nonzero) digits is 214326, while the sum is 49.

The square root of 199971076 is about 14141.1129689286. The cubic root of 199971076 is about 584.7753548538.

The spelling of 199971076 in words is "one hundred ninety-nine million, nine hundred seventy-one thousand, seventy-six".