8448991 has 4 divisors (see below), whose sum is σ = 8536192. Its totient is φ = 8361792.

The previous prime is 8448959. The next prime is 8449013. The reversal of 8448991 is 1998448.

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

It is a cyclic number.

It is not a de Polignac number, because 8448991 - 2⁵ = 8448959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8448931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43455 + ... + 43648.

It is an arithmetic number, because the mean of its divisors is an integer number (2134048).

Almost surely, 2^8448991 is an apocalyptic number.

8448991 is a deficient number, since it is larger than the sum of its proper divisors (87201).

8448991 is an equidigital number, since it uses as much as digits as its factorization.

8448991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87200.

The product of its digits is 82944, while the sum is 43.

The square root of 8448991 is about 2906.7148122924. The cubic root of 8448991 is about 203.6736982038.

The spelling of 8448991 in words is "eight million, four hundred forty-eight thousand, nine hundred ninety-one".