385906 has 8 divisors (see below), whose sum is σ = 583020. Its totient is φ = 191568.

The previous prime is 385901. The next prime is 385907. The reversal of 385906 is 609583.

It can be written as a sum of positive squares in 2 ways, for example, as 366025 + 19881 = 605^2 + 141^2 .

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

It is a nialpdrome in base 5.

It is not an unprimeable number, because it can be changed into a prime (385901) 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 3 ways as a sum of consecutive naturals, for example, 301 + ... + 928.

2³⁸⁵⁹⁰⁶ is an apocalyptic number.

385906 is a deficient number, since it is larger than the sum of its proper divisors (197114).

385906 is a wasteful number, since it uses less digits than its factorization.

385906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1388.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 385906 is about 621.2133288976. The cubic root of 385906 is about 72.8048833419.

It can be divided in two parts, 38590 and 6, that multiplied together give a triangular number (231540 = T₆₈₀).

The spelling of 385906 in words is "three hundred eighty-five thousand, nine hundred six".