159448697 has 4 divisors (see below), whose sum is σ = 161092596. Its totient is φ = 157804800.

The previous prime is 159448669. The next prime is 159448771. The reversal of 159448697 is 796844951.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 120648256 + 38800441 = 10984^2 + 6229^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-159448697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (159448607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 821804 + ... + 821997.

It is an arithmetic number, because the mean of its divisors is an integer number (40273149).

Almost surely, 2^159448697 is an apocalyptic number.

It is an amenable number.

159448697 is a deficient number, since it is larger than the sum of its proper divisors (1643899).

159448697 is an equidigital number, since it uses as much as digits as its factorization.

159448697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1643898.

The product of its digits is 2177280, while the sum is 53.

The square root of 159448697 is about 12627.2996717430. The cubic root of 159448697 is about 542.2592780537.

The spelling of 159448697 in words is "one hundred fifty-nine million, four hundred forty-eight thousand, six hundred ninety-seven".