9447985 has 8 divisors (see below), whose sum is σ = 11523816. Its totient is φ = 7434240.

The previous prime is 9447983. The next prime is 9448001. The reversal of 9447985 is 5897449.

It can be written as a sum of positive squares in 4 ways, for example, as 1478656 + 7969329 = 1216^2 + 2823^2 .

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

It is not a de Polignac number, because 9447985 - 2¹ = 9447983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9447983) 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, 15184 + ... + 15793.

It is an arithmetic number, because the mean of its divisors is an integer number (1440477).

Almost surely, 2^9447985 is an apocalyptic number.

It is an amenable number.

9447985 is a deficient number, since it is larger than the sum of its proper divisors (2075831).

9447985 is a wasteful number, since it uses less digits than its factorization.

9447985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31043.

The product of its digits is 362880, while the sum is 46.

The square root of 9447985 is about 3073.7574725407. The cubic root of 9447985 is about 211.4039341139.

The spelling of 9447985 in words is "nine million, four hundred forty-seven thousand, nine hundred eighty-five".