984281261 has 2 divisors, whose sum is σ = 984281262. Its totient is φ = 984281260.

The previous prime is 984281209. The next prime is 984281267. The reversal of 984281261 is 162182489.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 677821225 + 306460036 = 26035^2 + 17506^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-984281261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (984281267) 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, 492140630 + 492140631.

It is an arithmetic number, because the mean of its divisors is an integer number (492140631).

Almost surely, 2^984281261 is an apocalyptic number.

It is an amenable number.

984281261 is a deficient number, since it is larger than the sum of its proper divisors (1).

984281261 is an equidigital number, since it uses as much as digits as its factorization.

984281261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 55296, while the sum is 41.

The square root of 984281261 is about 31373.2570990007. The cubic root of 984281261 is about 994.7327248580.

The spelling of 984281261 in words is "nine hundred eighty-four million, two hundred eighty-one thousand, two hundred sixty-one".