8981491 has 16 divisors (see below), whose sum is σ = 9931680. Its totient is φ = 8087040.

The previous prime is 8981461. The next prime is 8981563. The reversal of 8981491 is 1941898.

8981491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 8981491 - 2⁵ = 8981459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8981411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68496 + ... + 68626.

It is an arithmetic number, because the mean of its divisors is an integer number (620730).

Almost surely, 2^8981491 is an apocalyptic number.

8981491 is a deficient number, since it is larger than the sum of its proper divisors (950189).

8981491 is a wasteful number, since it uses less digits than its factorization.

8981491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294.

The product of its digits is 20736, while the sum is 40.

The square root of 8981491 is about 2996.9135790009. The cubic root of 8981491 is about 207.8656908447.

The spelling of 8981491 in words is "eight million, nine hundred eighty-one thousand, four hundred ninety-one".