197871059929 has 9 divisors (see below), whose sum is σ = 199165421343. Its totient is φ = 196585065072.

The previous prime is 197871059899. The next prime is 197871059941. The reversal of 197871059929 is 929950178791.

The square root of 197871059929 is 444827.

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., 190686802329 + 7184257600 = 436677^2 + 84760^2 .

It is not a de Polignac number, because 197871059929 - 2¹³ = 197871051737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197871059329) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 72505437 + ... + 72508165.

Almost surely, 2^197871059929 is an apocalyptic number.

197871059929 is the 444827-th square number.

197871059929 is the 222414-th centered octagonal number.

It is an amenable number.

197871059929 is a deficient number, since it is larger than the sum of its proper divisors (1294361414).

197871059929 is an frugal number, since it uses more digits than its factorization.

197871059929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5784 (or 2892 counting only the distinct ones).

The product of its (nonzero) digits is 25719120, while the sum is 67.

The spelling of 197871059929 in words is "one hundred ninety-seven billion, eight hundred seventy-one million, fifty-nine thousand, nine hundred twenty-nine".