159975947 has 2 divisors, whose sum is σ = 159975948. Its totient is φ = 159975946.

The previous prime is 159975929. The next prime is 159975997. The reversal of 159975947 is 749579951.

It is a weak prime.

It is an emirp because it is prime and its reverse (749579951) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 159975947 - 2⁶ = 159975883 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 159975892 and 159975901.

It is not a weakly prime, because it can be changed into another prime (159975917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79987973 + 79987974.

It is an arithmetic number, because the mean of its divisors is an integer number (79987974).

Almost surely, 2^159975947 is an apocalyptic number.

159975947 is a deficient number, since it is larger than the sum of its proper divisors (1).

159975947 is an equidigital number, since it uses as much as digits as its factorization.

159975947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3572100, while the sum is 56.

The square root of 159975947 is about 12648.1598266309. The cubic root of 159975947 is about 542.8563178361.

The spelling of 159975947 in words is "one hundred fifty-nine million, nine hundred seventy-five thousand, nine hundred forty-seven".