864079 has 2 divisors, whose sum is σ = 864080. Its totient is φ = 864078.

The previous prime is 864077. The next prime is 864091. The reversal of 864079 is 970468.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 864079 - 2¹ = 864077 is a prime.

Together with 864077, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (864077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432039 + 432040.

It is an arithmetic number, because the mean of its divisors is an integer number (432040).

2⁸⁶⁴⁰⁷⁹ is an apocalyptic number.

864079 is a deficient number, since it is larger than the sum of its proper divisors (1).

864079 is an equidigital number, since it uses as much as digits as its factorization.

864079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 864079 is about 929.5584973524. The cubic root of 864079 is about 95.2469659158.

The spelling of 864079 in words is "eight hundred sixty-four thousand, seventy-nine".