8739978975 has 240 divisors, whose sum is σ = 20407360512. Its totient is φ = 3599043840.

The previous prime is 8739978943. The next prime is 8739978977. The reversal of 8739978975 is 5798799378.

8739978975 is a `hidden beast` number, since 87 + 399 + 78 + 97 + 5 = 666.

It is not a de Polignac number, because 8739978975 - 2⁵ = 8739978943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8739978977) by changing a digit.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 7923274 + ... + 7924376.

Almost surely, 2^8739978975 is an apocalyptic number.

8739978975 is an abundant number, since it is smaller than the sum of its proper divisors (11667381537).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8739978975 is a wasteful number, since it uses less digits than its factorization.

8739978975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1188 (or 1174 counting only the distinct ones).

The product of its digits is 240045120, while the sum is 72.

The square root of 8739978975 is about 93487.8546924679. The cubic root of 8739978975 is about 2059.8556922036.

The spelling of 8739978975 in words is "eight billion, seven hundred thirty-nine million, nine hundred seventy-eight thousand, nine hundred seventy-five".