9781485 has 32 divisors (see below), whose sum is σ = 18831360. Its totient is φ = 4235328.

The previous prime is 9781483. The next prime is 9781487. The reversal of 9781485 is 5841879.

It is an interprime number because it is at equal distance from previous prime (9781483) and next prime (9781487).

It is not a de Polignac number, because 9781485 - 2¹ = 9781483 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9781481) 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 31 ways as a sum of consecutive naturals, for example, 457 + ... + 4446.

It is an arithmetic number, because the mean of its divisors is an integer number (588480).

Almost surely, 2^9781485 is an apocalyptic number.

9781485 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

It is an amenable number.

9781485 is a deficient number, since it is larger than the sum of its proper divisors (9049875).

9781485 is a wasteful number, since it uses less digits than its factorization.

9781485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4937.

The product of its digits is 80640, while the sum is 42.

The square root of 9781485 is about 3127.5365705296. The cubic root of 9781485 is about 213.8626436816.

The spelling of 9781485 in words is "nine million, seven hundred eighty-one thousand, four hundred eighty-five".