946782121 has 2 divisors, whose sum is σ = 946782122. Its totient is φ = 946782120.

The previous prime is 946782091. The next prime is 946782149. The reversal of 946782121 is 121287649.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 943411225 + 3370896 = 30715^2 + 1836^2 .

It is a cyclic number.

It is not a de Polignac number, because 946782121 - 2²⁹ = 409911209 is a prime.

It is not a weakly prime, because it can be changed into another prime (946785121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 473391060 + 473391061.

It is an arithmetic number, because the mean of its divisors is an integer number (473391061).

Almost surely, 2^946782121 is an apocalyptic number.

It is an amenable number.

946782121 is a deficient number, since it is larger than the sum of its proper divisors (1).

946782121 is an equidigital number, since it uses as much as digits as its factorization.

946782121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 40.

The square root of 946782121 is about 30769.8248451303. The cubic root of 946782121 is about 981.9363772187.

The spelling of 946782121 in words is "nine hundred forty-six million, seven hundred eighty-two thousand, one hundred twenty-one".