199026371 has 4 divisors (see below), whose sum is σ = 199662552. Its totient is φ = 198390192.

The previous prime is 199026343. The next prime is 199026379. The reversal of 199026371 is 173620991.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199026371 is a prime.

It is a super-2 number, since 2×199026371² = 79222992706859282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199026379) 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 3 ways as a sum of consecutive naturals, for example, 317621 + ... + 318246.

It is an arithmetic number, because the mean of its divisors is an integer number (49915638).

Almost surely, 2^199026371 is an apocalyptic number.

199026371 is a deficient number, since it is larger than the sum of its proper divisors (636181).

199026371 is an equidigital number, since it uses as much as digits as its factorization.

199026371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636180.

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 199026371 is about 14107.6706440149. The cubic root of 199026371 is about 583.8530340685.

The spelling of 199026371 in words is "one hundred ninety-nine million, twenty-six thousand, three hundred seventy-one".