159439489 has 4 divisors (see below), whose sum is σ = 173934000. Its totient is φ = 144944980.

The previous prime is 159439487. The next prime is 159439499. The reversal of 159439489 is 984934951.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 159439489 - 2¹ = 159439487 is a prime.

It is a super-2 number, since 2×159439489² = 50841901305162242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (159439487) 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, 7247239 + ... + 7247260.

It is an arithmetic number, because the mean of its divisors is an integer number (43483500).

Almost surely, 2^159439489 is an apocalyptic number.

It is an amenable number.

159439489 is a deficient number, since it is larger than the sum of its proper divisors (14494511).

159439489 is a wasteful number, since it uses less digits than its factorization.

159439489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14494510.

The product of its digits is 1399680, while the sum is 52.

The square root of 159439489 is about 12626.9350596255. The cubic root of 159439489 is about 542.2488395456.

The spelling of 159439489 in words is "one hundred fifty-nine million, four hundred thirty-nine thousand, four hundred eighty-nine".