388279 has 4 divisors (see below), whose sum is σ = 394920. Its totient is φ = 381640.

The previous prime is 388277. The next prime is 388301. The reversal of 388279 is 972883.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 972883 = 307 ⋅3169.

It is a cyclic number.

It is not a de Polignac number, because 388279 - 2¹ = 388277 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 (388273) 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, 3232 + ... + 3349.

It is an arithmetic number, because the mean of its divisors is an integer number (98730).

2³⁸⁸²⁷⁹ is an apocalyptic number.

388279 is a deficient number, since it is larger than the sum of its proper divisors (6641).

388279 is an equidigital number, since it uses as much as digits as its factorization.

388279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6640.

The product of its digits is 24192, while the sum is 37.

The square root of 388279 is about 623.1203736037. The cubic root of 388279 is about 72.9538082707.

The spelling of 388279 in words is "three hundred eighty-eight thousand, two hundred seventy-nine".