159494779 has 4 divisors (see below), whose sum is σ = 161043376. Its totient is φ = 157946184.

The previous prime is 159494771. The next prime is 159494813. The reversal of 159494779 is 977494951.

159494779 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 977494951 = 17 ⋅57499703.

It is a cyclic number.

It is not a de Polignac number, because 159494779 - 2³ = 159494771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (159494771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 774144 + ... + 774349.

It is an arithmetic number, because the mean of its divisors is an integer number (40260844).

Almost surely, 2^159494779 is an apocalyptic number.

159494779 is a deficient number, since it is larger than the sum of its proper divisors (1548597).

159494779 is a wasteful number, since it uses less digits than its factorization.

159494779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1548596.

The product of its digits is 2857680, while the sum is 55.

The square root of 159494779 is about 12629.1242372541. The cubic root of 159494779 is about 542.3115121696.

The spelling of 159494779 in words is "one hundred fifty-nine million, four hundred ninety-four thousand, seven hundred seventy-nine".