384889 has 2 divisors, whose sum is σ = 384890. Its totient is φ = 384888.

The previous prime is 384851. The next prime is 384907. The reversal of 384889 is 988483.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 313600 + 71289 = 560^2 + 267^2 .

It is an emirp because it is prime and its reverse (988483) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-384889 is a prime.

It is not a weakly prime, because it can be changed into another prime (384089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192444 + 192445.

It is an arithmetic number, because the mean of its divisors is an integer number (192445).

2³⁸⁴⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

384889 is a deficient number, since it is larger than the sum of its proper divisors (1).

384889 is an equidigital number, since it uses as much as digits as its factorization.

384889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55296, while the sum is 40.

The square root of 384889 is about 620.3942295025. The cubic root of 384889 is about 72.7408714628.

The spelling of 384889 in words is "three hundred eighty-four thousand, eight hundred eighty-nine".