8491073 has 2 divisors, whose sum is σ = 8491074. Its totient is φ = 8491072.

The previous prime is 8491069. The next prime is 8491097. The reversal of 8491073 is 3701948.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6265009 + 2226064 = 2503^2 + 1492^2 .

It is a cyclic number.

It is not a de Polignac number, because 8491073 - 2² = 8491069 is a prime.

It is not a weakly prime, because it can be changed into another prime (8491033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4245536 + 4245537.

It is an arithmetic number, because the mean of its divisors is an integer number (4245537).

Almost surely, 2^8491073 is an apocalyptic number.

It is an amenable number.

8491073 is a deficient number, since it is larger than the sum of its proper divisors (1).

8491073 is an equidigital number, since it uses as much as digits as its factorization.

8491073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 8491073 is about 2913.9445773727. The cubic root of 8491073 is about 204.0112850991.

The spelling of 8491073 in words is "eight million, four hundred ninety-one thousand, seventy-three".