159279247 has 4 divisors (see below), whose sum is σ = 161295520. Its totient is φ = 157262976.

The previous prime is 159279229. The next prime is 159279251. The reversal of 159279247 is 742972951.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 159279247 - 2²³ = 150890639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 159279197 and 159279206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159279217) 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, 1008018 + ... + 1008175.

It is an arithmetic number, because the mean of its divisors is an integer number (40323880).

Almost surely, 2^159279247 is an apocalyptic number.

159279247 is the 7287-th hex number.

159279247 is a deficient number, since it is larger than the sum of its proper divisors (2016273).

159279247 is an equidigital number, since it uses as much as digits as its factorization.

159279247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2016272.

The product of its digits is 317520, while the sum is 46.

The square root of 159279247 is about 12620.5882192551. The cubic root of 159279247 is about 542.0671192687.

The spelling of 159279247 in words is "one hundred fifty-nine million, two hundred seventy-nine thousand, two hundred forty-seven".