947030621 has 2 divisors, whose sum is σ = 947030622. Its totient is φ = 947030620.

The previous prime is 947030603. The next prime is 947030629. The reversal of 947030621 is 126030749.

947030621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 923856025 + 23174596 = 30395^2 + 4814^2 .

It is a cyclic number.

It is not a de Polignac number, because 947030621 - 2¹⁸ = 946768477 is a prime.

It is a super-2 number, since 2×947030621² = 1793733994223291282, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (947030629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 473515310 + 473515311.

It is an arithmetic number, because the mean of its divisors is an integer number (473515311).

Almost surely, 2^947030621 is an apocalyptic number.

It is an amenable number.

947030621 is a deficient number, since it is larger than the sum of its proper divisors (1).

947030621 is an equidigital number, since it uses as much as digits as its factorization.

947030621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 947030621 is about 30773.8626272361. The cubic root of 947030621 is about 982.0222786594.

The spelling of 947030621 in words is "nine hundred forty-seven million, thirty thousand, six hundred twenty-one".