159393897 has 12 divisors (see below), whose sum is σ = 247946244. Its totient is φ = 98088480.

The previous prime is 159393877. The next prime is 159393901. The reversal of 159393897 is 798393951.

It can be written as a sum of positive squares in 2 ways, for example, as 87160896 + 72233001 = 9336^2 + 8499^2 .

It is not a de Polignac number, because 159393897 - 2¹¹ = 159391849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (159393827) 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, 681054 + ... + 681287.

It is an arithmetic number, because the mean of its divisors is an integer number (20662187).

Almost surely, 2^159393897 is an apocalyptic number.

It is an amenable number.

159393897 is a deficient number, since it is larger than the sum of its proper divisors (88552347).

159393897 is a wasteful number, since it uses less digits than its factorization.

159393897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1362360 (or 1362357 counting only the distinct ones).

The product of its digits is 1837080, while the sum is 54.

The square root of 159393897 is about 12625.1295834934. The cubic root of 159393897 is about 542.1971489511.

Adding to 159393897 its sum of digits (54), we get a palindrome (159393951).

The spelling of 159393897 in words is "one hundred fifty-nine million, three hundred ninety-three thousand, eight hundred ninety-seven".