9781263 has 16 divisors (see below), whose sum is σ = 14709760. Its totient is φ = 6422328.

The previous prime is 9781259. The next prime is 9781267. The reversal of 9781263 is 3621879.

It is an interprime number because it is at equal distance from previous prime (9781259) and next prime (9781267).

It is not a de Polignac number, because 9781263 - 2² = 9781259 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 (9781267) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 895 + ... + 4512.

It is an arithmetic number, because the mean of its divisors is an integer number (919360).

Almost surely, 2^9781263 is an apocalyptic number.

9781263 is a deficient number, since it is larger than the sum of its proper divisors (4928497).

9781263 is a wasteful number, since it uses less digits than its factorization.

9781263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5483 (or 5477 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 9781263 is about 3127.5010791365. The cubic root of 9781263 is about 213.8610257315.

The spelling of 9781263 in words is "nine million, seven hundred eighty-one thousand, two hundred sixty-three".