386891 has 2 divisors, whose sum is σ = 386892. Its totient is φ = 386890.

The previous prime is 386887. The next prime is 386921. The reversal of 386891 is 198683.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 386891 - 2² = 386887 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (386851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193445 + 193446.

It is an arithmetic number, because the mean of its divisors is an integer number (193446).

2³⁸⁶⁸⁹¹ is an apocalyptic number.

386891 is a deficient number, since it is larger than the sum of its proper divisors (1).

386891 is an equidigital number, since it uses as much as digits as its factorization.

386891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 35.

The square root of 386891 is about 622.0056269842. The cubic root of 386891 is about 72.8667739598.

The spelling of 386891 in words is "three hundred eighty-six thousand, eight hundred ninety-one".