8490457 has 2 divisors, whose sum is σ = 8490458. Its totient is φ = 8490456.

The previous prime is 8490439. The next prime is 8490487. The reversal of 8490457 is 7540948.

8490457 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8042896 + 447561 = 2836^2 + 669^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8490457 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8490487) 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 as a sum of consecutive naturals, namely, 4245228 + 4245229.

It is an arithmetic number, because the mean of its divisors is an integer number (4245229).

Almost surely, 2^8490457 is an apocalyptic number.

It is an amenable number.

8490457 is a deficient number, since it is larger than the sum of its proper divisors (1).

8490457 is an equidigital number, since it uses as much as digits as its factorization.

8490457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 8490457 is about 2913.8388768084. The cubic root of 8490457 is about 204.0063515259.

The spelling of 8490457 in words is "eight million, four hundred ninety thousand, four hundred fifty-seven".