8791481 has 4 divisors (see below), whose sum is σ = 8957412. Its totient is φ = 8625552.

The previous prime is 8791477. The next prime is 8791487. The reversal of 8791481 is 1841978.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6295081 + 2496400 = 2509^2 + 1580^2 .

It is a cyclic number.

It is not a de Polignac number, because 8791481 - 2² = 8791477 is a prime.

It is a super-2 number, since 2×8791481² = 154580276346722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8791487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82886 + ... + 82991.

It is an arithmetic number, because the mean of its divisors is an integer number (2239353).

Almost surely, 2^8791481 is an apocalyptic number.

It is an amenable number.

8791481 is a deficient number, since it is larger than the sum of its proper divisors (165931).

8791481 is a wasteful number, since it uses less digits than its factorization.

8791481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165930.

The product of its digits is 16128, while the sum is 38.

The square root of 8791481 is about 2965.0431700061. The cubic root of 8791481 is about 206.3893804128.

The spelling of 8791481 in words is "eight million, seven hundred ninety-one thousand, four hundred eighty-one".