159669899 has 6 divisors (see below), whose sum is σ = 169615044. Its totient is φ = 150277280.

The previous prime is 159669883. The next prime is 159669929. The reversal of 159669899 is 998966951.

It is not a de Polignac number, because 159669899 - 2⁴ = 159669883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (159669299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 275957 + ... + 276534.

It is an arithmetic number, because the mean of its divisors is an integer number (28269174).

Almost surely, 2^159669899 is an apocalyptic number.

159669899 is a deficient number, since it is larger than the sum of its proper divisors (9945145).

159669899 is an equidigital number, since it uses as much as digits as its factorization.

159669899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552525 (or 552508 counting only the distinct ones).

The product of its digits is 9447840, while the sum is 62.

The square root of 159669899 is about 12636.0555158641. The cubic root of 159669899 is about 542.5099196159.

The spelling of 159669899 in words is "one hundred fifty-nine million, six hundred sixty-nine thousand, eight hundred ninety-nine".