9916944289 has 4 divisors (see below), whose sum is σ = 11333650624. Its totient is φ = 8500237956.

The previous prime is 9916944263. The next prime is 9916944307. The reversal of 9916944289 is 9824496199.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 9916944289 - 2⁷ = 9916944161 is a prime.

It is a super-2 number, since 2×9916944289² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9916944209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 708353157 + ... + 708353170.

It is an arithmetic number, because the mean of its divisors is an integer number (2833412656).

Almost surely, 2^9916944289 is an apocalyptic number.

It is an amenable number.

9916944289 is a deficient number, since it is larger than the sum of its proper divisors (1416706335).

9916944289 is a wasteful number, since it uses less digits than its factorization.

9916944289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1416706334.

The product of its digits is 10077696, while the sum is 61.

The square root of 9916944289 is about 99583.8555640421. The cubic root of 9916944289 is about 2148.4534967667.

The spelling of 9916944289 in words is "nine billion, nine hundred sixteen million, nine hundred forty-four thousand, two hundred eighty-nine".