378979 has 4 divisors (see below), whose sum is σ = 382984. Its totient is φ = 374976.

The previous prime is 378977. The next prime is 378997. The reversal of 378979 is 979873.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 378979 - 2¹ = 378977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1857 + ... + 2050.

It is an arithmetic number, because the mean of its divisors is an integer number (95746).

2³⁷⁸⁹⁷⁹ is an apocalyptic number.

378979 is a deficient number, since it is larger than the sum of its proper divisors (4005).

378979 is an equidigital number, since it uses as much as digits as its factorization.

378979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4004.

The product of its digits is 95256, while the sum is 43.

The square root of 378979 is about 615.6127029229. The cubic root of 378979 is about 72.3666355227.

The spelling of 378979 in words is "three hundred seventy-eight thousand, nine hundred seventy-nine".