8709945 has 8 divisors (see below), whose sum is σ = 13935936. Its totient is φ = 4645296.

The previous prime is 8709941. The next prime is 8709959. The reversal of 8709945 is 5499078.

8709945 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 8709945 - 2² = 8709941 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 8709897 and 8709906.

It is not an unprimeable number, because it can be changed into a prime (8709941) 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, 290317 + ... + 290346.

It is an arithmetic number, because the mean of its divisors is an integer number (1741992).

Almost surely, 2^8709945 is an apocalyptic number.

It is an amenable number.

8709945 is a deficient number, since it is larger than the sum of its proper divisors (5225991).

8709945 is a wasteful number, since it uses less digits than its factorization.

8709945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580671.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 8709945 is about 2951.2615946405. The cubic root of 8709945 is about 205.7493495263.

The spelling of 8709945 in words is "eight million, seven hundred nine thousand, nine hundred forty-five".