9664143399 has 16 divisors (see below), whose sum is σ = 14339001600. Its totient is φ = 6432973848.

The previous prime is 9664143389. The next prime is 9664143407. The reversal of 9664143399 is 9933414669.

It is not a de Polignac number, because 9664143399 - 2²⁹ = 9127272487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9664143389) 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, 253779 + ... + 289364.

It is an arithmetic number, because the mean of its divisors is an integer number (896187600).

Almost surely, 2^9664143399 is an apocalyptic number.

9664143399 is a deficient number, since it is larger than the sum of its proper divisors (4674858201).

9664143399 is a wasteful number, since it uses less digits than its factorization.

9664143399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543811 (or 543805 counting only the distinct ones).

The product of its digits is 3779136, while the sum is 54.

The square root of 9664143399 is about 98306.3751696705. The cubic root of 9664143399 is about 2130.0401440559.

The spelling of 9664143399 in words is "nine billion, six hundred sixty-four million, one hundred forty-three thousand, three hundred ninety-nine".