8931272989 has 4 divisors (see below), whose sum is σ = 9138977056. Its totient is φ = 8723568924.

The previous prime is 8931272957. The next prime is 8931272993. The reversal of 8931272989 is 9892721398.

8931272989 is digitally balanced in base 3, 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8931272989 - 2⁵ = 8931272957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8931272929) 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, 103851969 + ... + 103852054.

It is an arithmetic number, because the mean of its divisors is an integer number (2284744264).

Almost surely, 2^8931272989 is an apocalyptic number.

It is an amenable number.

8931272989 is a deficient number, since it is larger than the sum of its proper divisors (207704067).

8931272989 is a wasteful number, since it uses less digits than its factorization.

8931272989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207704066.

The product of its digits is 3919104, while the sum is 58.

The square root of 8931272989 is about 94505.4124852117. The cubic root of 8931272989 is about 2074.7755494582.

The spelling of 8931272989 in words is "eight billion, nine hundred thirty-one million, two hundred seventy-two thousand, nine hundred eighty-nine".