199884806629 has 2 divisors, whose sum is σ = 199884806630. Its totient is φ = 199884806628.

The previous prime is 199884806623. The next prime is 199884806633. The reversal of 199884806629 is 926608488991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 156839760900 + 43045045729 = 396030^2 + 207473^2 .

It is a cyclic number.

It is not a de Polignac number, because 199884806629 - 2¹⁹ = 199884282341 is a prime.

It is a super-2 number, since 2×199884806629² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199884806623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99942403314 + 99942403315.

It is an arithmetic number, because the mean of its divisors is an integer number (99942403315).

Almost surely, 2^199884806629 is an apocalyptic number.

It is an amenable number.

199884806629 is a deficient number, since it is larger than the sum of its proper divisors (1).

199884806629 is an equidigital number, since it uses as much as digits as its factorization.

199884806629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 107495424, while the sum is 70.

The spelling of 199884806629 in words is "one hundred ninety-nine billion, eight hundred eighty-four million, eight hundred six thousand, six hundred twenty-nine".