388489 has 2 divisors, whose sum is σ = 388490. Its totient is φ = 388488.

The previous prime is 388483. The next prime is 388499. The reversal of 388489 is 984883.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 350464 + 38025 = 592^2 + 195^2 .

It is a cyclic number.

It is not a de Polignac number, because 388489 - 2³ = 388481 is a prime.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (388481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194244 + 194245.

It is an arithmetic number, because the mean of its divisors is an integer number (194245).

2³⁸⁸⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

388489 is a deficient number, since it is larger than the sum of its proper divisors (1).

388489 is an equidigital number, since it uses as much as digits as its factorization.

388489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 55296, while the sum is 40.

The square root of 388489 is about 623.2888575933. The cubic root of 388489 is about 72.9669582123.

The spelling of 388489 in words is "three hundred eighty-eight thousand, four hundred eighty-nine".