159539440 has 40 divisors (see below), whose sum is σ = 383725440. Its totient is φ = 61614336.

The previous prime is 159539437. The next prime is 159539483. The reversal of 159539440 is 44935951.

159539440 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 159539393 and 159539402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32064 + ... + 36703.

It is an arithmetic number, because the mean of its divisors is an integer number (9593136).

Almost surely, 2^159539440 is an apocalyptic number.

159539440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

159539440 is an abundant number, since it is smaller than the sum of its proper divisors (224186000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

159539440 is a wasteful number, since it uses less digits than its factorization.

159539440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68809 (or 68803 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 40.

The square root of 159539440 is about 12630.8922883540. The cubic root of 159539440 is about 542.3621259771.

The spelling of 159539440 in words is "one hundred fifty-nine million, five hundred thirty-nine thousand, four hundred forty".