8972273 has 2 divisors, whose sum is σ = 8972274. Its totient is φ = 8972272.

The previous prime is 8972263. The next prime is 8972279. The reversal of 8972273 is 3722798.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8898289 + 73984 = 2983^2 + 272^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8972273 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (8972279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4486136 + 4486137.

It is an arithmetic number, because the mean of its divisors is an integer number (4486137).

Almost surely, 2^8972273 is an apocalyptic number.

It is an amenable number.

8972273 is a deficient number, since it is larger than the sum of its proper divisors (1).

8972273 is an equidigital number, since it uses as much as digits as its factorization.

8972273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 38.

The square root of 8972273 is about 2995.3752686433. The cubic root of 8972273 is about 207.7945533675.

The spelling of 8972273 in words is "eight million, nine hundred seventy-two thousand, two hundred seventy-three".