8978994049 has 8 divisors (see below), whose sum is σ = 9027171560. Its totient is φ = 8930894976.

The previous prime is 8978994047. The next prime is 8978994067. The reversal of 8978994049 is 9404998798.

It can be written as a sum of positive squares in 4 ways, for example, as 3040750449 + 5938243600 = 55143^2 + 77060^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8978994049 - 2¹ = 8978994047 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8978994041) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 217579 + ... + 255535.

It is an arithmetic number, because the mean of its divisors is an integer number (1128396445).

Almost surely, 2^8978994049 is an apocalyptic number.

It is an amenable number.

8978994049 is a deficient number, since it is larger than the sum of its proper divisors (48177511).

8978994049 is a wasteful number, since it uses less digits than its factorization.

8978994049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39219.

The product of its (nonzero) digits is 47029248, while the sum is 67.

The square root of 8978994049 is about 94757.5540471576. The cubic root of 8978994049 is about 2078.4642609419.

The spelling of 8978994049 in words is "eight billion, nine hundred seventy-eight million, nine hundred ninety-four thousand, forty-nine".