409278 has 8 divisors (see below), whose sum is σ = 818568. Its totient is φ = 136424.

The previous prime is 409271. The next prime is 409289. The reversal of 409278 is 872904.

409278 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.

409278 is an admirable number.

It is a nialpdrome in base 14.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 409278.

It is not an unprimeable number, because it can be changed into a prime (409271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34101 + ... + 34112.

It is an arithmetic number, because the mean of its divisors is an integer number (102321).

2⁴⁰⁹²⁷⁸ is an apocalyptic number.

409278 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.

409278 is a wasteful number, since it uses less digits than its factorization.

409278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68218.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 409278 is about 639.7483880402. The cubic root of 409278 is about 74.2459554078.

The spelling of 409278 in words is "four hundred nine thousand, two hundred seventy-eight".