7992984891 has 32 divisors (see below), whose sum is σ = 11074190400. Its totient is φ = 5124331520.

The previous prime is 7992984889. The next prime is 7992984893. The reversal of 7992984891 is 1984892997.

It is an interprime number because it is at equal distance from previous prime (7992984889) and next prime (7992984893).

It is a cyclic number.

It is not a de Polignac number, because 7992984891 - 2¹ = 7992984889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7992984893) 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 31 ways as a sum of consecutive naturals, for example, 4257445 + ... + 4259321.

It is an arithmetic number, because the mean of its divisors is an integer number (346068450).

Almost surely, 2^7992984891 is an apocalyptic number.

7992984891 is a deficient number, since it is larger than the sum of its proper divisors (3081205509).

7992984891 is a wasteful number, since it uses less digits than its factorization.

7992984891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2399.

The product of its digits is 23514624, while the sum is 66.

The square root of 7992984891 is about 89403.4948477966. The cubic root of 7992984891 is about 1999.4152366259.

The spelling of 7992984891 in words is "seven billion, nine hundred ninety-two million, nine hundred eighty-four thousand, eight hundred ninety-one".