159409439 has 16 divisors (see below), whose sum is σ = 186193920. Its totient is φ = 133660800.

The previous prime is 159409429. The next prime is 159409441. The reversal of 159409439 is 934904951.

It is a happy number.

It is not a de Polignac number, because 159409439 - 2¹⁶ = 159343903 is a prime.

It is a super-2 number, since 2×159409439² = 50822738484589442, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 159409439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159409429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61214 + ... + 63764.

It is an arithmetic number, because the mean of its divisors is an integer number (11637120).

Almost surely, 2^159409439 is an apocalyptic number.

159409439 is a deficient number, since it is larger than the sum of its proper divisors (26784481).

159409439 is a wasteful number, since it uses less digits than its factorization.

159409439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2750.

The product of its (nonzero) digits is 174960, while the sum is 44.

The square root of 159409439 is about 12625.7450869246. The cubic root of 159409439 is about 542.2147710274.

The spelling of 159409439 in words is "one hundred fifty-nine million, four hundred nine thousand, four hundred thirty-nine".