8978994198 has 48 divisors (see below), whose sum is σ = 20584664880. Its totient is φ = 2820759552.

The previous prime is 8978994187. The next prime is 8978994209. The reversal of 8978994198 is 8914998798.

It is an interprime number because it is at equal distance from previous prime (8978994187) and next prime (8978994209).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2011 + ... + 134022.

It is an arithmetic number, because the mean of its divisors is an integer number (428847185).

Almost surely, 2^8978994198 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8978994198, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10292332440).

8978994198 is an abundant number, since it is smaller than the sum of its proper divisors (11605670682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8978994198 is a wasteful number, since it uses less digits than its factorization.

8978994198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136253 (or 136250 counting only the distinct ones).

The product of its digits is 94058496, while the sum is 72.

The square root of 8978994198 is about 94757.5548333746. The cubic root of 8978994198 is about 2078.4642724387.

The spelling of 8978994198 in words is "eight billion, nine hundred seventy-eight million, nine hundred ninety-four thousand, one hundred ninety-eight".