8491049 has 4 divisors (see below), whose sum is σ = 9704064. Its totient is φ = 7278036.

The previous prime is 8491037. The next prime is 8491051. The reversal of 8491049 is 9401948.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8491049 - 2⁴ = 8491033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8491069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 606497 + ... + 606510.

It is an arithmetic number, because the mean of its divisors is an integer number (2426016).

Almost surely, 2^8491049 is an apocalyptic number.

It is an amenable number.

8491049 is a deficient number, since it is larger than the sum of its proper divisors (1213015).

8491049 is a wasteful number, since it uses less digits than its factorization.

8491049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1213014.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 8491049 is about 2913.9404592407. The cubic root of 8491049 is about 204.0110928865.

The spelling of 8491049 in words is "eight million, four hundred ninety-one thousand, forty-nine".