830086021 has 2 divisors, whose sum is σ = 830086022. Its totient is φ = 830086020.

The previous prime is 830085967. The next prime is 830086051. The reversal of 830086021 is 120680038.

830086021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 724201921 + 105884100 = 26911^2 + 10290^2 .

It is a cyclic number.

It is not a de Polignac number, because 830086021 - 2¹⁵ = 830053253 is a prime.

It is a super-2 number, since 2×830086021² = 1378085604519224882, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (830086051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 415043010 + 415043011.

It is an arithmetic number, because the mean of its divisors is an integer number (415043011).

Almost surely, 2^830086021 is an apocalyptic number.

It is an amenable number.

830086021 is a deficient number, since it is larger than the sum of its proper divisors (1).

830086021 is an equidigital number, since it uses as much as digits as its factorization.

830086021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 830086021 is about 28811.2134593460. The cubic root of 830086021 is about 939.8121025522.

The spelling of 830086021 in words is "eight hundred thirty million, eighty-six thousand, twenty-one".