388723 has 4 divisors (see below), whose sum is σ = 405648. Its totient is φ = 371800.

The previous prime is 388711. The next prime is 388727. The reversal of 388723 is 327883.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 327883 = 19 ⋅17257.

It is a cyclic number.

It is not a de Polignac number, because 388723 - 2⁵ = 388691 is a prime.

It is a super-2 number, since 2×388723² = 302211141458, which contains 22 as substring.

It is a d-powerful number, because it can be written as 3² + 8⁴ + 7⁶ + 8⁴ + 2¹⁸ + 3⁶ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (388727) 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 3 ways as a sum of consecutive naturals, for example, 8428 + ... + 8473.

It is an arithmetic number, because the mean of its divisors is an integer number (101412).

2³⁸⁸⁷²³ is an apocalyptic number.

388723 is a deficient number, since it is larger than the sum of its proper divisors (16925).

388723 is a wasteful number, since it uses less digits than its factorization.

388723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16924.

The product of its digits is 8064, while the sum is 31.

The square root of 388723 is about 623.4765432637. The cubic root of 388723 is about 72.9816054235.

It can be divided in two parts, 3887 and 23, that multiplied together give a square (89401 = 299²).

The spelling of 388723 in words is "three hundred eighty-eight thousand, seven hundred twenty-three".