199629659 has 2 divisors, whose sum is σ = 199629660. Its totient is φ = 199629658.

The previous prime is 199629653. The next prime is 199629679. The reversal of 199629659 is 956926991.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199629659 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (199629653) 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 as a sum of consecutive naturals, namely, 99814829 + 99814830.

It is an arithmetic number, because the mean of its divisors is an integer number (99814830).

Almost surely, 2^199629659 is an apocalyptic number.

199629659 is a deficient number, since it is larger than the sum of its proper divisors (1).

199629659 is an equidigital number, since it uses as much as digits as its factorization.

199629659 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2361960, while the sum is 56.

The square root of 199629659 is about 14129.0360251505. The cubic root of 199629659 is about 584.4423633975.

The spelling of 199629659 in words is "one hundred ninety-nine million, six hundred twenty-nine thousand, six hundred fifty-nine".