159999999 has 8 divisors (see below), whose sum is σ = 218536752. Its totient is φ = 104064960.

The previous prime is 159999997. The next prime is 160000003. The reversal of 159999999 is 999999951.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 159999999 - 2¹ = 159999997 is a prime.

159999999 is a modest number, since divided by 99999 gives 1599 as remainder.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159999997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 650284 + ... + 650529.

It is an arithmetic number, because the mean of its divisors is an integer number (27317094).

Almost surely, 2^159999999 is an apocalyptic number.

159999999 is a deficient number, since it is larger than the sum of its proper divisors (58536753).

159999999 is a wasteful number, since it uses less digits than its factorization.

159999999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1300857.

The product of its digits is 23914845, while the sum is 69.

The square root of 159999999 is about 12649.1106011450. The cubic root of 159999999 is about 542.8835221880.

The spelling of 159999999 in words is "one hundred fifty-nine million, nine hundred ninety-nine thousand, nine hundred ninety-nine".