383491 has 4 divisors (see below), whose sum is σ = 385672. Its totient is φ = 381312.

The previous prime is 383489. The next prime is 383519. The reversal of 383491 is 194383.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 383491 - 2¹ = 383489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (383291) 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, 801 + ... + 1186.

It is an arithmetic number, because the mean of its divisors is an integer number (96418).

2³⁸³⁴⁹¹ is an apocalyptic number.

383491 is a deficient number, since it is larger than the sum of its proper divisors (2181).

383491 is a wasteful number, since it uses less digits than its factorization.

383491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2180.

The product of its digits is 2592, while the sum is 28.

The square root of 383491 is about 619.2665015968. The cubic root of 383491 is about 72.6526944304.

The spelling of 383491 in words is "three hundred eighty-three thousand, four hundred ninety-one".