159490906 has 16 divisors (see below), whose sum is σ = 254053800. Its totient is φ = 74833920.

The previous prime is 159490897. The next prime is 159490909. The reversal of 159490906 is 609094951.

159490906 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 143161225 + 16329681 = 11965^2 + 4041^2 .

It is not an unprimeable number, because it can be changed into a prime (159490909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5146 + ... + 18586.

Almost surely, 2^159490906 is an apocalyptic number.

159490906 is a deficient number, since it is larger than the sum of its proper divisors (94562894).

159490906 is a wasteful number, since it uses less digits than its factorization.

159490906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13809.

The product of its (nonzero) digits is 87480, while the sum is 43.

The square root of 159490906 is about 12628.9709002753. The cubic root of 159490906 is about 542.3071224972.

The spelling of 159490906 in words is "one hundred fifty-nine million, four hundred ninety thousand, nine hundred six".