288399 has 8 divisors (see below), whose sum is σ = 387072. Its totient is φ = 191000.

The previous prime is 288389. The next prime is 288403. The reversal of 288399 is 993882.

288399 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 288399 - 2⁴ = 288383 is a prime.

288399 is strictly pandigital in base 7.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (288349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 562 + ... + 944.

It is an arithmetic number, because the mean of its divisors is an integer number (48384).

2²⁸⁸³⁹⁹ is an apocalyptic number.

288399 is a deficient number, since it is larger than the sum of its proper divisors (98673).

288399 is a wasteful number, since it uses less digits than its factorization.

288399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637.

The product of its digits is 31104, while the sum is 39.

The square root of 288399 is about 537.0279322344. The cubic root of 288399 is about 66.0690278720.

The spelling of 288399 in words is "two hundred eighty-eight thousand, three hundred ninety-nine".