387399 has 8 divisors (see below), whose sum is σ = 519552. Its totient is φ = 256760.

The previous prime is 387397. The next prime is 387403. The reversal of 387399 is 993783.

It is a happy number.

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 387399 - 2¹ = 387397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387397) 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 in 7 ways as a sum of consecutive naturals, for example, 544 + ... + 1034.

It is an arithmetic number, because the mean of its divisors is an integer number (64944).

2³⁸⁷³⁹⁹ is an apocalyptic number.

387399 is a deficient number, since it is larger than the sum of its proper divisors (132153).

387399 is a wasteful number, since it uses less digits than its factorization.

387399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757.

The product of its digits is 40824, while the sum is 39.

The square root of 387399 is about 622.4138494603. The cubic root of 387399 is about 72.8986521303.

The spelling of 387399 in words is "three hundred eighty-seven thousand, three hundred ninety-nine".