199741689 has 27 divisors (see below), whose sum is σ = 336119823. Its totient is φ = 113968512.

The previous prime is 199741679. The next prime is 199741733. The reversal of 199741689 is 986147991.

The square root of 199741689 is 14133.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 65367225 + 134374464 = 8085^2 + 11592^2 .

It is not a de Polignac number, because 199741689 - 2⁵ = 199741657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (199741639) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 296457 + ... + 297129.

Almost surely, 2^199741689 is an apocalyptic number.

199741689 is the 14133-rd square number.

199741689 is the 7067-th centered octagonal number.

It is an amenable number.

199741689 is a deficient number, since it is larger than the sum of its proper divisors (136378134).

199741689 is an frugal number, since it uses more digits than its factorization.

199741689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1366 (or 683 counting only the distinct ones).

The product of its digits is 979776, while the sum is 54.

The cubic root of 199741689 is about 584.5516705251.

The spelling of 199741689 in words is "one hundred ninety-nine million, seven hundred forty-one thousand, six hundred eighty-nine".