159699639 has 16 divisors (see below), whose sum is σ = 232677504. Its totient is φ = 96626400.

The previous prime is 159699637. The next prime is 159699643. The reversal of 159699639 is 936996951.

159699639 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 159699639 - 2¹ = 159699637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159699637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17844 + ... + 25254.

It is an arithmetic number, because the mean of its divisors is an integer number (14542344).

Almost surely, 2^159699639 is an apocalyptic number.

159699639 is a deficient number, since it is larger than the sum of its proper divisors (72977865).

159699639 is a wasteful number, since it uses less digits than its factorization.

159699639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8078.

The product of its digits is 3542940, while the sum is 57.

The square root of 159699639 is about 12637.2322523565. The cubic root of 159699639 is about 542.5436000267.

The spelling of 159699639 in words is "one hundred fifty-nine million, six hundred ninety-nine thousand, six hundred thirty-nine".