8947238869 has 4 divisors (see below), whose sum is σ = 8958874540. Its totient is φ = 8935603200.

The previous prime is 8947238827. The next prime is 8947238921. The reversal of 8947238869 is 9688327498.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9688327498 = 2 ⋅4844163749.

It can be written as a sum of positive squares in 2 ways, for example, as 3713439844 + 5233799025 = 60938^2 + 72345^2 .

It is a cyclic number.

It is not a de Polignac number, because 8947238869 - 2¹¹ = 8947236821 is a prime.

It is a super-2 number, since 2×8947238869² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8947238869.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8947236869) 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, 5816682 + ... + 5818219.

It is an arithmetic number, because the mean of its divisors is an integer number (2239718635).

Almost surely, 2^8947238869 is an apocalyptic number.

It is an amenable number.

8947238869 is a deficient number, since it is larger than the sum of its proper divisors (11635671).

8947238869 is a wasteful number, since it uses less digits than its factorization.

8947238869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11635670.

The product of its digits is 41803776, while the sum is 64.

The square root of 8947238869 is about 94589.8454856545. The cubic root of 8947238869 is about 2076.0111291344.

The spelling of 8947238869 in words is "eight billion, nine hundred forty-seven million, two hundred thirty-eight thousand, eight hundred sixty-nine".