860399 has 2 divisors, whose sum is σ = 860400. Its totient is φ = 860398.

The previous prime is 860393. The next prime is 860413. The reversal of 860399 is 993068.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 860399 - 2⁴ = 860383 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a plaindrome in base 12.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (860393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430199 + 430200.

It is an arithmetic number, because the mean of its divisors is an integer number (430200).

2⁸⁶⁰³⁹⁹ is an apocalyptic number.

860399 is a deficient number, since it is larger than the sum of its proper divisors (1).

860399 is an equidigital number, since it uses as much as digits as its factorization.

860399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 860399 is about 927.5769509857. The cubic root of 860399 is about 95.1115586958. Note that the first 3 decimals are identical.

The spelling of 860399 in words is "eight hundred sixty thousand, three hundred ninety-nine".