384091 has 4 divisors (see below), whose sum is σ = 391392. Its totient is φ = 376792.

The previous prime is 384089. The next prime is 384107. The reversal of 384091 is 190483.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 190483 = 239 ⋅797.

It is a cyclic number.

It is not a de Polignac number, because 384091 - 2¹ = 384089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (384001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3571 + ... + 3676.

It is an arithmetic number, because the mean of its divisors is an integer number (97848).

2³⁸⁴⁰⁹¹ is an apocalyptic number.

384091 is a deficient number, since it is larger than the sum of its proper divisors (7301).

384091 is an equidigital number, since it uses as much as digits as its factorization.

384091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7300.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 384091 is about 619.7507563529. The cubic root of 384091 is about 72.6905648561.

The spelling of 384091 in words is "three hundred eighty-four thousand, ninety-one".