609440159 has 4 divisors (see below), whose sum is σ = 612056016. Its totient is φ = 606824304.

The previous prime is 609440149. The next prime is 609440171. The reversal of 609440159 is 951044906.

609440159 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 609440159 - 2¹² = 609436063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (609440149) 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, 1307579 + ... + 1308044.

It is an arithmetic number, because the mean of its divisors is an integer number (153014004).

Almost surely, 2^609440159 is an apocalyptic number.

609440159 is a deficient number, since it is larger than the sum of its proper divisors (2615857).

609440159 is a wasteful number, since it uses less digits than its factorization.

609440159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2615856.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 609440159 is about 24686.8418190744. The cubic root of 609440159 is about 847.8330775154.

The spelling of 609440159 in words is "six hundred nine million, four hundred forty thousand, one hundred fifty-nine".