980689121 has 2 divisors, whose sum is σ = 980689122. Its totient is φ = 980689120.

The previous prime is 980689069. The next prime is 980689141. The reversal of 980689121 is 121986089.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 891858496 + 88830625 = 29864^2 + 9425^2 .

It is a cyclic number.

It is not a de Polignac number, because 980689121 - 2⁶ = 980689057 is a prime.

It is not a weakly prime, because it can be changed into another prime (980689141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490344560 + 490344561.

It is an arithmetic number, because the mean of its divisors is an integer number (490344561).

Almost surely, 2^980689121 is an apocalyptic number.

It is an amenable number.

980689121 is a deficient number, since it is larger than the sum of its proper divisors (1).

980689121 is an equidigital number, since it uses as much as digits as its factorization.

980689121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 44.

The square root of 980689121 is about 31315.9563321959. The cubic root of 980689121 is about 993.5211555588.

The spelling of 980689121 in words is "nine hundred eighty million, six hundred eighty-nine thousand, one hundred twenty-one".