378939 has 8 divisors (see below), whose sum is σ = 551232. Its totient is φ = 229640.

The previous prime is 378929. The next prime is 378941. The reversal of 378939 is 939873.

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 378939 - 2⁸ = 378683 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 378897 and 378906.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 378939.

It is not an unprimeable number, because it can be changed into a prime (378919) 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, 5709 + ... + 5774.

It is an arithmetic number, because the mean of its divisors is an integer number (68904).

2³⁷⁸⁹³⁹ is an apocalyptic number.

378939 is a deficient number, since it is larger than the sum of its proper divisors (172293).

378939 is a wasteful number, since it uses less digits than its factorization.

378939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11497.

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

The square root of 378939 is about 615.5802141070. The cubic root of 378939 is about 72.3640894122.

It can be divided in two parts, 3789 and 39, that added together give a triangular number (3828 = T₈₇).

The spelling of 378939 in words is "three hundred seventy-eight thousand, nine hundred thirty-nine".