2159229947 has 8 divisors (see below), whose sum is σ = 2472721152. Its totient is φ = 1846996200.

The previous prime is 2159229931. The next prime is 2159230039. The reversal of 2159229947 is 7499229512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2159229947 - 2⁴ = 2159229931 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2159229895 and 2159229904.

It is not an unprimeable number, because it can be changed into a prime (2159249947) 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, 310679 + ... + 317552.

It is an arithmetic number, because the mean of its divisors is an integer number (309090144).

Almost surely, 2^2159229947 is an apocalyptic number.

2159229947 is a deficient number, since it is larger than the sum of its proper divisors (313491205).

2159229947 is an equidigital number, since it uses as much as digits as its factorization.

2159229947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628729.

The product of its digits is 816480, while the sum is 50.

The square root of 2159229947 is about 46467.5149647579. The cubic root of 2159229947 is about 1292.5071819741.

The spelling of 2159229947 in words is "two billion, one hundred fifty-nine million, two hundred twenty-nine thousand, nine hundred forty-seven".