388099 has 2 divisors, whose sum is σ = 388100. Its totient is φ = 388098.

The previous prime is 388081. The next prime is 388109. The reversal of 388099 is 990883.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 388099 - 2⁵ = 388067 is a prime.

It is not a weakly prime, because it can be changed into another prime (388009) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194049 + 194050.

It is an arithmetic number, because the mean of its divisors is an integer number (194050).

2³⁸⁸⁰⁹⁹ is an apocalyptic number.

388099 is a deficient number, since it is larger than the sum of its proper divisors (1).

388099 is an equidigital number, since it uses as much as digits as its factorization.

388099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 388099 is about 622.9759224882. The cubic root of 388099 is about 72.9425331178.

Adding to 388099 its product of nonzero digits (15552), we get a triangular number (403651 = T₈₉₈).

It can be divided in two parts, 38809 and 9, that multiplied together give a square (349281 = 591²).

The spelling of 388099 in words is "three hundred eighty-eight thousand, ninety-nine".