8942809865 has 8 divisors (see below), whose sum is σ = 11706951168. Its totient is φ = 6503861680.

The previous prime is 8942809861. The next prime is 8942809873. The reversal of 8942809865 is 5689082498.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8942809865 - 2² = 8942809861 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8942809861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81298217 + ... + 81298326.

It is an arithmetic number, because the mean of its divisors is an integer number (1463368896).

Almost surely, 2^8942809865 is an apocalyptic number.

It is an amenable number.

8942809865 is a deficient number, since it is larger than the sum of its proper divisors (2764141303).

8942809865 is a wasteful number, since it uses less digits than its factorization.

8942809865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162596559.

The product of its (nonzero) digits is 9953280, while the sum is 59.

The square root of 8942809865 is about 94566.4309625778. The cubic root of 8942809865 is about 2075.6685214201.

The spelling of 8942809865 in words is "eight billion, nine hundred forty-two million, eight hundred nine thousand, eight hundred sixty-five".