8169948079 has 4 divisors (see below), whose sum is σ = 8170161120. Its totient is φ = 8169735040.

The previous prime is 8169948071. The next prime is 8169948097. The reversal of 8169948079 is 9708499618.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9708499618 = 2 ⋅4854249809.

It is a cyclic number.

It is not a de Polignac number, because 8169948079 - 2³ = 8169948071 is a prime.

It is a super-2 number, since 2×8169948079² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8169948071) 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, 31282 + ... + 131599.

It is an arithmetic number, because the mean of its divisors is an integer number (2042540280).

Almost surely, 2^8169948079 is an apocalyptic number.

8169948079 is a deficient number, since it is larger than the sum of its proper divisors (213041).

8169948079 is a wasteful number, since it uses less digits than its factorization.

8169948079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213040.

The product of its (nonzero) digits is 7838208, while the sum is 61.

The square root of 8169948079 is about 90387.7650957252. The cubic root of 8169948079 is about 2014.0632210451.

The spelling of 8169948079 in words is "eight billion, one hundred sixty-nine million, nine hundred forty-eight thousand, seventy-nine".