339978 has 8 divisors (see below), whose sum is σ = 679968. Its totient is φ = 113324.

The previous prime is 339959. The next prime is 339991. The reversal of 339978 is 879933.

It is a happy number.

339978 is digitally balanced in base 3, 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.

339978 is an admirable number.

It is a Curzon number.

It is a nialpdrome in base 13.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 339978.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28326 + ... + 28337.

It is an arithmetic number, because the mean of its divisors is an integer number (84996).

2³³⁹⁹⁷⁸ is an apocalyptic number.

339978 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

339978 is a wasteful number, since it uses less digits than its factorization.

339978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56668.

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

The square root of 339978 is about 583.0763243350. The cubic root of 339978 is about 69.7938150474.

It can be divided in two parts, 33 and 9978, that added together give a triangular number (10011 = T₁₄₁).

The spelling of 339978 in words is "three hundred thirty-nine thousand, nine hundred seventy-eight".