9663223949 has 4 divisors (see below), whose sum is σ = 9898912380. Its totient is φ = 9427535520.

The previous prime is 9663223943. The next prime is 9663223961. The reversal of 9663223949 is 9493223669.

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 2729331049 + 6933892900 = 52243^2 + 83270^2 .

It is a cyclic number.

It is not a de Polignac number, because 9663223949 - 2⁸ = 9663223693 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9663223949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9663223943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117844154 + ... + 117844235.

It is an arithmetic number, because the mean of its divisors is an integer number (2474728095).

Almost surely, 2^9663223949 is an apocalyptic number.

It is an amenable number.

9663223949 is a deficient number, since it is larger than the sum of its proper divisors (235688431).

9663223949 is a wasteful number, since it uses less digits than its factorization.

9663223949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235688430.

The product of its digits is 3779136, while the sum is 53.

The square root of 9663223949 is about 98301.6986068908. The cubic root of 9663223949 is about 2129.9725909909.

The spelling of 9663223949 in words is "nine billion, six hundred sixty-three million, two hundred twenty-three thousand, nine hundred forty-nine".