9964958243 has 4 divisors (see below), whose sum is σ = 9965277168. Its totient is φ = 9964639320.

The previous prime is 9964958207. The next prime is 9964958249. The reversal of 9964958243 is 3428594699.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9964958243 - 2¹⁴ = 9964941859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9964958249) 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, 106796 + ... + 177017.

It is an arithmetic number, because the mean of its divisors is an integer number (2491319292).

Almost surely, 2^9964958243 is an apocalyptic number.

9964958243 is a deficient number, since it is larger than the sum of its proper divisors (318925).

9964958243 is a wasteful number, since it uses less digits than its factorization.

9964958243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318924.

The product of its digits is 16796160, while the sum is 59.

The square root of 9964958243 is about 99824.6374548889. The cubic root of 9964958243 is about 2151.9152389738.

The spelling of 9964958243 in words is "nine billion, nine hundred sixty-four million, nine hundred fifty-eight thousand, two hundred forty-three".