159697044 has 36 divisors (see below), whose sum is σ = 434732116. Its totient is φ = 49137408.

The previous prime is 159697001. The next prime is 159697049. The reversal of 159697044 is 440796951.

It can be written as a sum of positive squares in 2 ways, for example, as 41757444 + 117939600 = 6462^2 + 10860^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159697049) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 170149 + ... + 171084.

Almost surely, 2^159697044 is an apocalyptic number.

It is an amenable number.

159697044 is an abundant number, since it is smaller than the sum of its proper divisors (275035072).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

159697044 is a wasteful number, since it uses less digits than its factorization.

159697044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341256 (or 341251 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 159697044 is about 12637.1295791410. The cubic root of 159697044 is about 542.5406613679.

The spelling of 159697044 in words is "one hundred fifty-nine million, six hundred ninety-seven thousand, forty-four".