219798755929 has 9 divisors (see below), whose sum is σ = 225917646591. Its totient is φ = 213841371240.

The previous prime is 219798755923. The next prime is 219798755933. The reversal of 219798755929 is 929557897912.

The square root of 219798755929 is 468827.

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

219798755929 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 196678945225 + 23119810704 = 443485^2 + 152052^2 .

It is not a de Polignac number, because 219798755929 - 2²⁷ = 219664538201 is a prime.

It is a super-2 number, since 2×219798755929² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (219798755923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 17340264 + ... + 17352934.

Almost surely, 2^219798755929 is an apocalyptic number.

219798755929 is the 468827-th square number.

219798755929 is the 234414-th centered octagonal number.

It is an amenable number.

219798755929 is a deficient number, since it is larger than the sum of its proper divisors (6118890662).

219798755929 is an frugal number, since it uses more digits than its factorization.

219798755929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25416 (or 12708 counting only the distinct ones).

The product of its digits is 257191200, while the sum is 73.

The spelling of 219798755929 in words is "two hundred nineteen billion, seven hundred ninety-eight million, seven hundred fifty-five thousand, nine hundred twenty-nine".