388679 has 4 divisors (see below), whose sum is σ = 392784. Its totient is φ = 384576.

The previous prime is 388673. The next prime is 388691. The reversal of 388679 is 976883.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-388679 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, 1907 + ... + 2100.

It is an arithmetic number, because the mean of its divisors is an integer number (98196).

2³⁸⁸⁶⁷⁹ is an apocalyptic number.

388679 is a deficient number, since it is larger than the sum of its proper divisors (4105).

388679 is an equidigital number, since it uses as much as digits as its factorization.

388679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4104.

The product of its digits is 72576, while the sum is 41.

The square root of 388679 is about 623.4412562543. The cubic root of 388679 is about 72.9788516958.

The spelling of 388679 in words is "three hundred eighty-eight thousand, six hundred seventy-nine".