388307 has 4 divisors (see below), whose sum is σ = 392760. Its totient is φ = 383856.

The previous prime is 388301. The next prime is 388313. The reversal of 388307 is 703883.

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

It is an interprime number because it is at equal distance from previous prime (388301) and next prime (388313).

It is a cyclic number.

It is not a de Polignac number, because 388307 - 2⁸ = 388051 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 388307.

It is not an unprimeable number, because it can be changed into a prime (388301) 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, 2093 + ... + 2270.

It is an arithmetic number, because the mean of its divisors is an integer number (98190).

2³⁸⁸³⁰⁷ is an apocalyptic number.

388307 is a deficient number, since it is larger than the sum of its proper divisors (4453).

388307 is an equidigital number, since it uses as much as digits as its factorization.

388307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4452.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 388307 is about 623.1428407677. The cubic root of 388307 is about 72.9555618701.

The spelling of 388307 in words is "three hundred eighty-eight thousand, three hundred seven".