947670121 has 2 divisors, whose sum is σ = 947670122. Its totient is φ = 947670120.

The previous prime is 947670079. The next prime is 947670137. The reversal of 947670121 is 121076749.

947670121 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., 920515600 + 27154521 = 30340^2 + 5211^2 .

It is an emirp because it is prime and its reverse (121076749) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 947670121 - 2⁹ = 947669609 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (947670161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 473835060 + 473835061.

It is an arithmetic number, because the mean of its divisors is an integer number (473835061).

Almost surely, 2^947670121 is an apocalyptic number.

It is an amenable number.

947670121 is a deficient number, since it is larger than the sum of its proper divisors (1).

947670121 is an equidigital number, since it uses as much as digits as its factorization.

947670121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 947670121 is about 30784.2511846561. The cubic root of 947670121 is about 982.2432718456.

It can be divided in two parts, 9476 and 70121, that added together give a palindrome (79597).

The spelling of 947670121 in words is "nine hundred forty-seven million, six hundred seventy thousand, one hundred twenty-one".