385491 has 8 divisors (see below), whose sum is σ = 541120. Its totient is φ = 243432.

The previous prime is 385481. The next prime is 385493. The reversal of 385491 is 194583.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-385491 is a prime.

It is a super-2 number, since 2×385491² = 297206622162, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (385493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3325 + ... + 3438.

It is an arithmetic number, because the mean of its divisors is an integer number (67640).

2³⁸⁵⁴⁹¹ is an apocalyptic number.

385491 is a deficient number, since it is larger than the sum of its proper divisors (155629).

385491 is a wasteful number, since it uses less digits than its factorization.

385491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6785.

The product of its digits is 4320, while the sum is 30.

The square root of 385491 is about 620.8792153068. The cubic root of 385491 is about 72.7787760656.

The spelling of 385491 in words is "three hundred eighty-five thousand, four hundred ninety-one".