9978338443 has 4 divisors (see below), whose sum is σ = 9997418008. Its totient is φ = 9959258880.

The previous prime is 9978338429. The next prime is 9978338543. The reversal of 9978338443 is 3448338799.

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

It is a de Polignac number, because none of the positive numbers 2^k-9978338443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9978338543) 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, 9538998 + ... + 9540043.

It is an arithmetic number, because the mean of its divisors is an integer number (2499354502).

Almost surely, 2^9978338443 is an apocalyptic number.

9978338443 is a deficient number, since it is larger than the sum of its proper divisors (19079565).

9978338443 is a wasteful number, since it uses less digits than its factorization.

9978338443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19079564.

The product of its digits is 15676416, while the sum is 58.

The square root of 9978338443 is about 99891.6334985068. The cubic root of 9978338443 is about 2152.8779517830.

The spelling of 9978338443 in words is "nine billion, nine hundred seventy-eight million, three hundred thirty-eight thousand, four hundred forty-three".