9001385 has 4 divisors (see below), whose sum is σ = 10801668. Its totient is φ = 7201104.

The previous prime is 9001351. The next prime is 9001387. The reversal of 9001385 is 5831009.

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 5721664 + 3279721 = 2392^2 + 1811^2 .

It is a cyclic number.

It is not a de Polignac number, because 9001385 - 2¹⁴ = 8985001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9001387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 900134 + ... + 900143.

It is an arithmetic number, because the mean of its divisors is an integer number (2700417).

Almost surely, 2^9001385 is an apocalyptic number.

It is an amenable number.

9001385 is a deficient number, since it is larger than the sum of its proper divisors (1800283).

9001385 is a wasteful number, since it uses less digits than its factorization.

9001385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1800282.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 9001385 is about 3000.2308244533. The cubic root of 9001385 is about 208.0190518175.

The spelling of 9001385 in words is "nine million, one thousand, three hundred eighty-five".