385897 has 2 divisors, whose sum is σ = 385898. Its totient is φ = 385896.

The previous prime is 385877. The next prime is 385901. The reversal of 385897 is 798583.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 385641 + 256 = 621^2 + 16^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-385897 is a prime.

It is not a weakly prime, because it can be changed into another prime (385817) 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, 192948 + 192949.

It is an arithmetic number, because the mean of its divisors is an integer number (192949).

2³⁸⁵⁸⁹⁷ is an apocalyptic number.

It is an amenable number.

385897 is a deficient number, since it is larger than the sum of its proper divisors (1).

385897 is an equidigital number, since it uses as much as digits as its factorization.

385897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 40.

The square root of 385897 is about 621.2060849670. The cubic root of 385897 is about 72.8043173586.

Subtracting 385897 from its reverse (798583), we obtain a triangular number (412686 = T₉₀₈).

The spelling of 385897 in words is "three hundred eighty-five thousand, eight hundred ninety-seven".