9145985 has 4 divisors (see below), whose sum is σ = 10975188. Its totient is φ = 7316784.

The previous prime is 9145967. The next prime is 9145987. The reversal of 9145985 is 5895419.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3952144 + 5193841 = 1988^2 + 2279^2 .

It is a cyclic number.

It is not a de Polignac number, because 9145985 - 2⁶ = 9145921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9145987) 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, 914594 + ... + 914603.

It is an arithmetic number, because the mean of its divisors is an integer number (2743797).

Almost surely, 2^9145985 is an apocalyptic number.

It is an amenable number.

9145985 is a deficient number, since it is larger than the sum of its proper divisors (1829203).

9145985 is a wasteful number, since it uses less digits than its factorization.

9145985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1829202.

The product of its digits is 64800, while the sum is 41.

The square root of 9145985 is about 3024.2329606034. The cubic root of 9145985 is about 209.1270260976.

The spelling of 9145985 in words is "nine million, one hundred forty-five thousand, nine hundred eighty-five".