160389217 has 4 divisors (see below), whose sum is σ = 160480660. Its totient is φ = 160297776.

The previous prime is 160389211. The next prime is 160389221. The reversal of 160389217 is 712983061.

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 150896656 + 9492561 = 12284^2 + 3081^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-160389217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (160389211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43038 + ... + 46615.

It is an arithmetic number, because the mean of its divisors is an integer number (40120165).

Almost surely, 2^160389217 is an apocalyptic number.

It is an amenable number.

160389217 is a deficient number, since it is larger than the sum of its proper divisors (91443).

160389217 is an equidigital number, since it uses as much as digits as its factorization.

160389217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91442.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 160389217 is about 12664.4864483326. The cubic root of 160389217 is about 543.3233741342.

The spelling of 160389217 in words is "one hundred sixty million, three hundred eighty-nine thousand, two hundred seventeen".