829987 has 2 divisors, whose sum is σ = 829988. Its totient is φ = 829986.

The previous prime is 829979. The next prime is 829993. The reversal of 829987 is 789928.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 829987 - 2³ = 829979 is a prime.

It is not a weakly prime, because it can be changed into another prime (829967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 414993 + 414994.

It is an arithmetic number, because the mean of its divisors is an integer number (414994).

2⁸²⁹⁹⁸⁷ is an apocalyptic number.

829987 is a deficient number, since it is larger than the sum of its proper divisors (1).

829987 is an equidigital number, since it uses as much as digits as its factorization.

829987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 43.

The square root of 829987 is about 911.0362232096. The cubic root of 829987 is about 93.9774730990.

The spelling of 829987 in words is "eight hundred twenty-nine thousand, nine hundred eighty-seven".