9936666399 has 8 divisors (see below), whose sum is σ = 14453332992. Its totient is φ = 6022222040.

The previous prime is 9936666371. The next prime is 9936666419.

9936666399 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9936666399 - 2¹² = 9936662303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9936666319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150555519 + ... + 150555584.

It is an arithmetic number, because the mean of its divisors is an integer number (1806666624).

Almost surely, 2^9936666399 is an apocalyptic number.

9936666399 is a deficient number, since it is larger than the sum of its proper divisors (4516666593).

9936666399 is a wasteful number, since it uses less digits than its factorization.

9936666399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301111117.

The product of its digits is 76527504, while the sum is 66.

The square root of 9936666399 is about 99682.8290078086. The cubic root of 9936666399 is about 2149.8767839248.

The spelling of 9936666399 in words is "nine billion, nine hundred thirty-six million, six hundred sixty-six thousand, three hundred ninety-nine".