945085309 has 8 divisors (see below), whose sum is σ = 1080331520. Its totient is φ = 809897616.

The previous prime is 945085291. The next prime is 945085319. The reversal of 945085309 is 903580549.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 945085309 - 2⁵ = 945085277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (945085319) 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, 28447 + ... + 51955.

It is an arithmetic number, because the mean of its divisors is an integer number (135041440).

Almost surely, 2^945085309 is an apocalyptic number.

It is an amenable number.

945085309 is a deficient number, since it is larger than the sum of its proper divisors (135246211).

945085309 is a wasteful number, since it uses less digits than its factorization.

945085309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29259.

The product of its (nonzero) digits is 194400, while the sum is 43.

The square root of 945085309 is about 30742.2398175540. The cubic root of 945085309 is about 981.3494214163.

The spelling of 945085309 in words is "nine hundred forty-five million, eighty-five thousand, three hundred nine".