9999763 has 4 divisors (see below), whose sum is σ = 10322368. Its totient is φ = 9677160.

The previous prime is 9999761. The next prime is 9999823. The reversal of 9999763 is 3679999.

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

It is a cyclic number.

It is not a de Polignac number, because 9999763 - 2¹ = 9999761 is a prime.

It is a Duffinian number.

9999763 is a lucky number.

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 9999763.

It is not an unprimeable number, because it can be changed into a prime (9999761) 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, 161256 + ... + 161317.

It is an arithmetic number, because the mean of its divisors is an integer number (2580592).

Almost surely, 2^9999763 is an apocalyptic number.

9999763 is a deficient number, since it is larger than the sum of its proper divisors (322605).

9999763 is a wasteful number, since it uses less digits than its factorization.

9999763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322604.

The product of its digits is 826686, while the sum is 52.

The square root of 9999763 is about 3162.2401869561. The cubic root of 9999763 is about 215.4417669863.

The spelling of 9999763 in words is "nine million, nine hundred ninety-nine thousand, seven hundred sixty-three".