8964778994 has 8 divisors (see below), whose sum is σ = 13585799388. Its totient is φ = 4436179200.

The previous prime is 8964778993. The next prime is 8964779029. The reversal of 8964778994 is 4998774698.

It can be written as a sum of positive squares in 2 ways, for example, as 8620194025 + 344584969 = 92845^2 + 18563^2 .

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

It is a super-2 number, since 2×8964778994² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8964778993) 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, 23104907 + ... + 23105294.

Almost surely, 2^8964778994 is an apocalyptic number.

8964778994 is a deficient number, since it is larger than the sum of its proper divisors (4621020394).

8964778994 is a wasteful number, since it uses less digits than its factorization.

8964778994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46210300.

The product of its digits is 219469824, while the sum is 71.

The square root of 8964778994 is about 94682.5168338907. The cubic root of 8964778994 is about 2077.3668444253.

The spelling of 8964778994 in words is "eight billion, nine hundred sixty-four million, seven hundred seventy-eight thousand, nine hundred ninety-four".