8280491 has 2 divisors, whose sum is σ = 8280492. Its totient is φ = 8280490.

The previous prime is 8280487. The next prime is 8280497. The reversal of 8280491 is 1940828.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8280491 - 2² = 8280487 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (8280497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4140245 + 4140246.

It is an arithmetic number, because the mean of its divisors is an integer number (4140246).

Almost surely, 2^8280491 is an apocalyptic number.

8280491 is a deficient number, since it is larger than the sum of its proper divisors (1).

8280491 is an equidigital number, since it uses as much as digits as its factorization.

8280491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 8280491 is about 2877.5842298706. The cubic root of 8280491 is about 202.3106272060.

The spelling of 8280491 in words is "eight million, two hundred eighty thousand, four hundred ninety-one".