384691 has 2 divisors, whose sum is σ = 384692. Its totient is φ = 384690.

The previous prime is 384673. The next prime is 384697. The reversal of 384691 is 196483.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 384691 - 2¹¹ = 382643 is a prime.

It is not a weakly prime, because it can be changed into another prime (384697) 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, 192345 + 192346.

It is an arithmetic number, because the mean of its divisors is an integer number (192346).

2³⁸⁴⁶⁹¹ is an apocalyptic number.

384691 is a deficient number, since it is larger than the sum of its proper divisors (1).

384691 is an equidigital number, since it uses as much as digits as its factorization.

384691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 31.

The square root of 384691 is about 620.2346330221. The cubic root of 384691 is about 72.7283958633.

The spelling of 384691 in words is "three hundred eighty-four thousand, six hundred ninety-one".