8991459 has 16 divisors (see below), whose sum is σ = 13900800. Its totient is φ = 5733288.

The previous prime is 8991449. The next prime is 8991517. The reversal of 8991459 is 9541998.

It is not a de Polignac number, because 8991459 - 2⁴ = 8991443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8991439) 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 15 ways as a sum of consecutive naturals, for example, 6619 + ... + 7860.

It is an arithmetic number, because the mean of its divisors is an integer number (868800).

Almost surely, 2^8991459 is an apocalyptic number.

8991459 is a deficient number, since it is larger than the sum of its proper divisors (4909341).

8991459 is a wasteful number, since it uses less digits than its factorization.

8991459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14511 (or 14505 counting only the distinct ones).

The product of its digits is 116640, while the sum is 45.

The square root of 8991459 is about 2998.5761621143. The cubic root of 8991459 is about 207.9425614945.

The spelling of 8991459 in words is "eight million, nine hundred ninety-one thousand, four hundred fifty-nine".