199401273 has 6 divisors (see below), whose sum is σ = 288024074. Its totient is φ = 132934176.

The previous prime is 199401247. The next prime is 199401281. The reversal of 199401273 is 372104991.

It can be written as a sum of positive squares in only one way, i.e., 191767104 + 7634169 = 13848^2 + 2763^2 .

It is not a de Polignac number, because 199401273 - 2⁸ = 199401017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199401203) 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 in 5 ways as a sum of consecutive naturals, for example, 11077840 + ... + 11077857.

Almost surely, 2^199401273 is an apocalyptic number.

It is an amenable number.

199401273 is a deficient number, since it is larger than the sum of its proper divisors (88622801).

199401273 is a wasteful number, since it uses less digits than its factorization.

199401273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22155703 (or 22155700 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 199401273 is about 14120.9515614211. The cubic root of 199401273 is about 584.2194015580.

The spelling of 199401273 in words is "one hundred ninety-nine million, four hundred one thousand, two hundred seventy-three".