834789121 has 2 divisors, whose sum is σ = 834789122. Its totient is φ = 834789120.

The previous prime is 834789107. The next prime is 834789133. The reversal of 834789121 is 121987438.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 491242896 + 343546225 = 22164^2 + 18535^2 .

It is a cyclic number.

It is not a de Polignac number, because 834789121 - 2¹⁵ = 834756353 is a prime.

It is not a weakly prime, because it can be changed into another prime (874789121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 417394560 + 417394561.

It is an arithmetic number, because the mean of its divisors is an integer number (417394561).

Almost surely, 2^834789121 is an apocalyptic number.

It is an amenable number.

834789121 is a deficient number, since it is larger than the sum of its proper divisors (1).

834789121 is an equidigital number, since it uses as much as digits as its factorization.

834789121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 43.

The square root of 834789121 is about 28892.7174388288. The cubic root of 834789121 is about 941.5836895516.

The spelling of 834789121 in words is "eight hundred thirty-four million, seven hundred eighty-nine thousand, one hundred twenty-one".