8991492472 has 8 divisors (see below), whose sum is σ = 16859048400. Its totient is φ = 4495746232.

The previous prime is 8991492467. The next prime is 8991492487. The reversal of 8991492472 is 2742941998.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 561968272 + ... + 561968287.

It is an arithmetic number, because the mean of its divisors is an integer number (2107381050).

Almost surely, 2^8991492472 is an apocalyptic number.

It is an amenable number.

8991492472 is a deficient number, since it is larger than the sum of its proper divisors (7867555928).

8991492472 is a wasteful number, since it uses less digits than its factorization.

8991492472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1123936565 (or 1123936561 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 55.

The square root of 8991492472 is about 94823.4805942073. The cubic root of 8991492472 is about 2079.4281952626.

The spelling of 8991492472 in words is "eight billion, nine hundred ninety-one million, four hundred ninety-two thousand, four hundred seventy-two".