873739121 has 2 divisors, whose sum is σ = 873739122. Its totient is φ = 873739120.

The previous prime is 873739109. The next prime is 873739159. The reversal of 873739121 is 121937378.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 744689521 + 129049600 = 27289^2 + 11360^2 .

It is a cyclic number.

It is not a de Polignac number, because 873739121 - 2¹⁴ = 873722737 is a prime.

It is not a weakly prime, because it can be changed into another prime (873739171) 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, 436869560 + 436869561.

It is an arithmetic number, because the mean of its divisors is an integer number (436869561).

Almost surely, 2^873739121 is an apocalyptic number.

It is an amenable number.

873739121 is a deficient number, since it is larger than the sum of its proper divisors (1).

873739121 is an equidigital number, since it uses as much as digits as its factorization.

873739121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63504, while the sum is 41.

The square root of 873739121 is about 29559.0784869894. The cubic root of 873739121 is about 956.0059467689.

The spelling of 873739121 in words is "eight hundred seventy-three million, seven hundred thirty-nine thousand, one hundred twenty-one".