159197397 has 16 divisors (see below), whose sum is σ = 213964800. Its totient is φ = 105285312.

The previous prime is 159197393. The next prime is 159197419. The reversal of 159197397 is 793791951.

It is not a de Polignac number, because 159197397 - 2² = 159197393 is a prime.

It is a super-2 number, since 2×159197397² = 50687622423151218, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159197393) 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, 400803 + ... + 401199.

It is an arithmetic number, because the mean of its divisors is an integer number (13372800).

Almost surely, 2^159197397 is an apocalyptic number.

It is an amenable number.

159197397 is a deficient number, since it is larger than the sum of its proper divisors (54767403).

159197397 is a wasteful number, since it uses less digits than its factorization.

159197397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1132.

The product of its digits is 535815, while the sum is 51.

The square root of 159197397 is about 12617.3450852388. The cubic root of 159197397 is about 541.9742513514.

The spelling of 159197397 in words is "one hundred fifty-nine million, one hundred ninety-seven thousand, three hundred ninety-seven".