947220797 has 2 divisors, whose sum is σ = 947220798. Its totient is φ = 947220796.

The previous prime is 947220767. The next prime is 947220809. The reversal of 947220797 is 797022749.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 946546756 + 674041 = 30766^2 + 821^2 .

It is a cyclic number.

It is not a de Polignac number, because 947220797 - 2⁶ = 947220733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (947220767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 473610398 + 473610399.

It is an arithmetic number, because the mean of its divisors is an integer number (473610399).

Almost surely, 2^947220797 is an apocalyptic number.

It is an amenable number.

947220797 is a deficient number, since it is larger than the sum of its proper divisors (1).

947220797 is an equidigital number, since it uses as much as digits as its factorization.

947220797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 444528, while the sum is 47.

The square root of 947220797 is about 30776.9523669905. The cubic root of 947220797 is about 982.0880085189.

The spelling of 947220797 in words is "nine hundred forty-seven million, two hundred twenty thousand, seven hundred ninety-seven".