8978338799 has 4 divisors (see below), whose sum is σ = 8979153264. Its totient is φ = 8977524336.

The previous prime is 8978338771. The next prime is 8978338841. The reversal of 8978338799 is 9978338798.

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 8978338799 - 2²⁸ = 8709903343 is a prime.

It is a super-2 number, since 2×8978338799² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8978331799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 390467 + ... + 412820.

It is an arithmetic number, because the mean of its divisors is an integer number (2244788316).

Almost surely, 2^8978338799 is an apocalyptic number.

8978338799 is a deficient number, since it is larger than the sum of its proper divisors (814465).

8978338799 is a wasteful number, since it uses less digits than its factorization.

8978338799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814464.

The product of its digits is 164602368, while the sum is 71.

The square root of 8978338799 is about 94754.0964760891. The cubic root of 8978338799 is about 2078.4137004585.

Subtracting 8978338799 from its reverse (9978338798), we obtain a palindrome (999999999).

The spelling of 8978338799 in words is "eight billion, nine hundred seventy-eight million, three hundred thirty-eight thousand, seven hundred ninety-nine".