8761139857 has 4 divisors (see below), whose sum is σ = 8947547136. Its totient is φ = 8574732580.

The previous prime is 8761139833. The next prime is 8761139869. The reversal of 8761139857 is 7589311678.

It is a happy number.

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 8761139857 - 2¹⁹ = 8760615569 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8761139798 and 8761139807.

It is not an unprimeable number, because it can be changed into a prime (8761139887) 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, 93203569 + ... + 93203662.

It is an arithmetic number, because the mean of its divisors is an integer number (2236886784).

Almost surely, 2^8761139857 is an apocalyptic number.

It is an amenable number.

8761139857 is a deficient number, since it is larger than the sum of its proper divisors (186407279).

8761139857 is a wasteful number, since it uses less digits than its factorization.

8761139857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186407278.

The product of its digits is 2540160, while the sum is 55.

The square root of 8761139857 is about 93600.9607696417. The cubic root of 8761139857 is about 2061.5167653207.

The spelling of 8761139857 in words is "eight billion, seven hundred sixty-one million, one hundred thirty-nine thousand, eight hundred fifty-seven".