159089440 has 24 divisors (see below), whose sum is σ = 375849180. Its totient is φ = 63635712.

The previous prime is 159089431. The next prime is 159089453. The reversal of 159089440 is 44980951.

It can be written as a sum of positive squares in 2 ways, for example, as 159062544 + 26896 = 12612^2 + 164^2 .

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 = 159089393 and 159089402.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 496995 + ... + 497314.

Almost surely, 2^159089440 is an apocalyptic number.

159089440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

159089440 is an abundant number, since it is smaller than the sum of its proper divisors (216759740).

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

159089440 is an equidigital number, since it uses as much as digits as its factorization.

159089440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 994324 (or 994316 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 159089440 is about 12613.0662410058. The cubic root of 159089440 is about 541.8517134495.

The spelling of 159089440 in words is "one hundred fifty-nine million, eighty-nine thousand, four hundred forty".