828360991 has 2 divisors, whose sum is σ = 828360992. Its totient is φ = 828360990.

The previous prime is 828360983. The next prime is 828361019. The reversal of 828360991 is 199063828.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 828360991 - 2³ = 828360983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (828360961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 414180495 + 414180496.

It is an arithmetic number, because the mean of its divisors is an integer number (414180496).

Almost surely, 2^828360991 is an apocalyptic number.

828360991 is a deficient number, since it is larger than the sum of its proper divisors (1).

828360991 is an equidigital number, since it uses as much as digits as its factorization.

828360991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 828360991 is about 28781.2611085755. The cubic root of 828360991 is about 939.1606325619.

The spelling of 828360991 in words is "eight hundred twenty-eight million, three hundred sixty thousand, nine hundred ninety-one".