9944831969 has 2 divisors, whose sum is σ = 9944831970. Its totient is φ = 9944831968.

The previous prime is 9944831959. The next prime is 9944832017. The reversal of 9944831969 is 9691384499.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9912193600 + 32638369 = 99560^2 + 5713^2 .

It is an emirp because it is prime and its reverse (9691384499) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9944831969 - 2²⁰ = 9943783393 is a prime.

It is a super-2 number, since 2×9944831969² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9944831959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4972415984 + 4972415985.

It is an arithmetic number, because the mean of its divisors is an integer number (4972415985).

Almost surely, 2^9944831969 is an apocalyptic number.

It is an amenable number.

9944831969 is a deficient number, since it is larger than the sum of its proper divisors (1).

9944831969 is an equidigital number, since it uses as much as digits as its factorization.

9944831969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15116544, while the sum is 62.

The square root of 9944831969 is about 99723.7783530087. The cubic root of 9944831969 is about 2150.4655180197.

The spelling of 9944831969 in words is "nine billion, nine hundred forty-four million, eight hundred thirty-one thousand, nine hundred sixty-nine".