388741 has 4 divisors (see below), whose sum is σ = 391500. Its totient is φ = 385984.

The previous prime is 388727. The next prime is 388757. The reversal of 388741 is 147883.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 147883 = 17 ⋅8699.

It can be written as a sum of positive squares in 2 ways, for example, as 108900 + 279841 = 330^2 + 529^2 .

It is a cyclic number.

It is not a de Polignac number, because 388741 - 2¹¹ = 386693 is a prime.

It is a super-2 number, since 2×388741² = 302239130162, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388711) 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, 1156 + ... + 1453.

It is an arithmetic number, because the mean of its divisors is an integer number (97875).

2³⁸⁸⁷⁴¹ is an apocalyptic number.

It is an amenable number.

388741 is a deficient number, since it is larger than the sum of its proper divisors (2759).

388741 is a wasteful number, since it uses less digits than its factorization.

388741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2758.

The product of its digits is 5376, while the sum is 31.

The square root of 388741 is about 623.4909782828. The cubic root of 388741 is about 72.9827318885.

The spelling of 388741 in words is "three hundred eighty-eight thousand, seven hundred forty-one".