388613 has 4 divisors (see below), whose sum is σ = 390540. Its totient is φ = 386688.

The previous prime is 388573. The next prime is 388621. The reversal of 388613 is 316883.

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

It can be written as a sum of positive squares in 2 ways, for example, as 368449 + 20164 = 607^2 + 142^2 .

It is a cyclic number.

It is not a de Polignac number, because 388613 - 2¹⁶ = 323077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388673) 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, 620 + ... + 1077.

It is an arithmetic number, because the mean of its divisors is an integer number (97635).

2³⁸⁸⁶¹³ is an apocalyptic number.

It is an amenable number.

388613 is a deficient number, since it is larger than the sum of its proper divisors (1927).

388613 is a wasteful number, since it uses less digits than its factorization.

388613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1926.

The product of its digits is 3456, while the sum is 29.

The square root of 388613 is about 623.3883219952. The cubic root of 388613 is about 72.9747207147.

It can be divided in two parts, 388 and 613, that added together give a palindrome (1001).

The spelling of 388613 in words is "three hundred eighty-eight thousand, six hundred thirteen".