9949716399 has 16 divisors (see below), whose sum is σ = 15418448640. Its totient is φ = 5589186240.

The previous prime is 9949716389. The next prime is 9949716407. The reversal of 9949716399 is 9936179499.

It is not a de Polignac number, because 9949716399 - 2⁵ = 9949716367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9949716319) 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, 4013982 + ... + 4016459.

It is an arithmetic number, because the mean of its divisors is an integer number (963653040).

Almost surely, 2^9949716399 is an apocalyptic number.

9949716399 is a deficient number, since it is larger than the sum of its proper divisors (5468732241).

9949716399 is a wasteful number, since it uses less digits than its factorization.

9949716399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8030510.

The product of its digits is 29760696, while the sum is 66.

The square root of 9949716399 is about 99748.2651428084. The cubic root of 9949716399 is about 2150.8175293001.

The spelling of 9949716399 in words is "nine billion, nine hundred forty-nine million, seven hundred sixteen thousand, three hundred ninety-nine".