828982621 has 2 divisors, whose sum is σ = 828982622. Its totient is φ = 828982620.

The previous prime is 828982613. The next prime is 828982631. The reversal of 828982621 is 126289828.

828982621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 784280025 + 44702596 = 28005^2 + 6686^2 .

It is a cyclic number.

It is not a de Polignac number, because 828982621 - 2³ = 828982613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (828982631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 414491310 + 414491311.

It is an arithmetic number, because the mean of its divisors is an integer number (414491311).

Almost surely, 2^828982621 is an apocalyptic number.

It is an amenable number.

828982621 is a deficient number, since it is larger than the sum of its proper divisors (1).

828982621 is an equidigital number, since it uses as much as digits as its factorization.

828982621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 221184, while the sum is 46.

The square root of 828982621 is about 28792.0582973847. The cubic root of 828982621 is about 939.3954997491.

The spelling of 828982621 in words is "eight hundred twenty-eight million, nine hundred eighty-two thousand, six hundred twenty-one".