159440740 has 24 divisors (see below), whose sum is σ = 337793400. Its totient is φ = 63211008.

The previous prime is 159440713. The next prime is 159440747. The reversal of 159440740 is 47044951.

It can be written as a sum of positive squares in 4 ways, for example, as 15824484 + 143616256 = 3978^2 + 11984^2 .

It is a junction number, because it is equal to n+sod(n) for n = 159440696 and 159440705.

It is not an unprimeable number, because it can be changed into a prime (159440747) 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 7 ways as a sum of consecutive naturals, for example, 33015 + ... + 37534.

It is an arithmetic number, because the mean of its divisors is an integer number (14074725).

Almost surely, 2^159440740 is an apocalyptic number.

159440740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

159440740 is an abundant number, since it is smaller than the sum of its proper divisors (178352660).

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

159440740 is a wasteful number, since it uses less digits than its factorization.

159440740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70671 (or 70669 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 159440740 is about 12626.9845964902. The cubic root of 159440740 is about 542.2502577462.

The spelling of 159440740 in words is "one hundred fifty-nine million, four hundred forty thousand, seven hundred forty".