388841 has 8 divisors (see below), whose sum is σ = 417960. Its totient is φ = 360448.

The previous prime is 388837. The next prime is 388859. The reversal of 388841 is 148883.

It can be written as a sum of positive squares in 4 ways, for example, as 163216 + 225625 = 404^2 + 475^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 388841 - 2² = 388837 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 388798 and 388807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388891) 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 in 7 ways as a sum of consecutive naturals, for example, 1385 + ... + 1641.

It is an arithmetic number, because the mean of its divisors is an integer number (52245).

2³⁸⁸⁸⁴¹ is an apocalyptic number.

It is an amenable number.

388841 is a deficient number, since it is larger than the sum of its proper divisors (29119).

388841 is a wasteful number, since it uses less digits than its factorization.

388841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363.

The product of its digits is 6144, while the sum is 32.

The square root of 388841 is about 623.5711667484. The cubic root of 388841 is about 72.9889893946.

The spelling of 388841 in words is "three hundred eighty-eight thousand, eight hundred forty-one".