947472641 has 2 divisors, whose sum is σ = 947472642. Its totient is φ = 947472640.

The previous prime is 947472629. The next prime is 947472667. The reversal of 947472641 is 146274749.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 780029041 + 167443600 = 27929^2 + 12940^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-947472641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 947472592 and 947472601.

It is not a weakly prime, because it can be changed into another prime (947474641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 473736320 + 473736321.

It is an arithmetic number, because the mean of its divisors is an integer number (473736321).

Almost surely, 2^947472641 is an apocalyptic number.

It is an amenable number.

947472641 is a deficient number, since it is larger than the sum of its proper divisors (1).

947472641 is an equidigital number, since it uses as much as digits as its factorization.

947472641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 338688, while the sum is 44.

The square root of 947472641 is about 30781.0435333177. The cubic root of 947472641 is about 982.1750389334.

The spelling of 947472641 in words is "nine hundred forty-seven million, four hundred seventy-two thousand, six hundred forty-one".