828990289 has 2 divisors, whose sum is σ = 828990290. Its totient is φ = 828990288.

The previous prime is 828990271. The next prime is 828990293. The reversal of 828990289 is 982099828.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 828979264 + 11025 = 28792^2 + 105^2 .

It is a cyclic number.

It is not a de Polignac number, because 828990289 - 2²³ = 820601681 is a prime.

It is not a weakly prime, because it can be changed into another prime (828990209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 414495144 + 414495145.

It is an arithmetic number, because the mean of its divisors is an integer number (414495145).

Almost surely, 2^828990289 is an apocalyptic number.

It is an amenable number.

828990289 is a deficient number, since it is larger than the sum of its proper divisors (1).

828990289 is an equidigital number, since it uses as much as digits as its factorization.

828990289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1492992, while the sum is 55.

The square root of 828990289 is about 28792.1914587966. The cubic root of 828990289 is about 939.3983961759.

The spelling of 828990289 in words is "eight hundred twenty-eight million, nine hundred ninety thousand, two hundred eighty-nine".