159387940 has 12 divisors (see below), whose sum is σ = 334714716. Its totient is φ = 63755168.

The previous prime is 159387931. The next prime is 159387947. The reversal of 159387940 is 49783951.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 33454656 + 125933284 = 5784^2 + 11222^2 .

It is not an unprimeable number, because it can be changed into a prime (159387947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3984679 + ... + 3984718.

It is an arithmetic number, because the mean of its divisors is an integer number (27892893).

Almost surely, 2^159387940 is an apocalyptic number.

159387940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

159387940 is an abundant number, since it is smaller than the sum of its proper divisors (175326776).

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

159387940 is a wasteful number, since it uses less digits than its factorization.

159387940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7969406 (or 7969404 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 159387940 is about 12624.8936629185. The cubic root of 159387940 is about 542.1903943875.

The spelling of 159387940 in words is "one hundred fifty-nine million, three hundred eighty-seven thousand, nine hundred forty".