199027478 has 16 divisors (see below), whose sum is σ = 328984656. Its totient is φ = 89722080.

The previous prime is 199027459. The next prime is 199027501. The reversal of 199027478 is 874720991.

It is a super-2 number, since 2×199027478² = 79223873998080968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 87893 + ... + 90128.

It is an arithmetic number, because the mean of its divisors is an integer number (20561541).

Almost surely, 2^199027478 is an apocalyptic number.

199027478 is a deficient number, since it is larger than the sum of its proper divisors (129957178).

199027478 is a wasteful number, since it uses less digits than its factorization.

199027478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178079.

The product of its (nonzero) digits is 254016, while the sum is 47.

The square root of 199027478 is about 14107.7098779355. The cubic root of 199027478 is about 583.8541165450.

The spelling of 199027478 in words is "one hundred ninety-nine million, twenty-seven thousand, four hundred seventy-eight".