159949597 has 2 divisors, whose sum is σ = 159949598. Its totient is φ = 159949596.

The previous prime is 159949591. The next prime is 159949667. The reversal of 159949597 is 795949951.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158911236 + 1038361 = 12606^2 + 1019^2 .

It is a cyclic number.

It is not a de Polignac number, because 159949597 - 2¹¹ = 159947549 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (159949591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79974798 + 79974799.

It is an arithmetic number, because the mean of its divisors is an integer number (79974799).

Almost surely, 2^159949597 is an apocalyptic number.

It is an amenable number.

159949597 is a deficient number, since it is larger than the sum of its proper divisors (1).

159949597 is an equidigital number, since it uses as much as digits as its factorization.

159949597 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4592700, while the sum is 58.

The square root of 159949597 is about 12647.1181302303. The cubic root of 159949597 is about 542.8265111690.

The spelling of 159949597 in words is "one hundred fifty-nine million, nine hundred forty-nine thousand, five hundred ninety-seven".