8994681972 has 36 divisors (see below), whose sum is σ = 22748944036. Its totient is φ = 2996593920.

The previous prime is 8994681937. The next prime is 8994681973. The reversal of 8994681972 is 2791864998.

8994681972 is a `hidden beast` number, since 8 + 99 + 468 + 19 + 72 = 666.

8994681972 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 63297936 + 8931384036 = 7956^2 + 94506^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8994681973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 133 + ... + 134124.

Almost surely, 2^8994681972 is an apocalyptic number.

It is an amenable number.

8994681972 is an abundant number, since it is smaller than the sum of its proper divisors (13754262064).

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

8994681972 is a wasteful number, since it uses less digits than its factorization.

8994681972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136128 (or 136123 counting only the distinct ones).

The product of its digits is 15676416, while the sum is 63.

The square root of 8994681972 is about 94840.2971948106. The cubic root of 8994681972 is about 2079.6740406988.

The spelling of 8994681972 in words is "eight billion, nine hundred ninety-four million, six hundred eighty-one thousand, nine hundred seventy-two".