409378 has 8 divisors (see below), whose sum is σ = 622080. Its totient is φ = 202020.

The previous prime is 409369. The next prime is 409379. The reversal of 409378 is 873904.

It is a happy number.

409378 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.

It is an Ulam number.

It is a plaindrome in base 12 and base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409379) 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, 1138 + ... + 1453.

It is an arithmetic number, because the mean of its divisors is an integer number (77760).

2⁴⁰⁹³⁷⁸ is an apocalyptic number.

409378 is a deficient number, since it is larger than the sum of its proper divisors (212702).

409378 is a wasteful number, since it uses less digits than its factorization.

409378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2672.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 409378 is about 639.8265389932. The cubic root of 409378 is about 74.2520018204.

It can be divided in two parts, 409 and 378, that added together give a palindrome (787).

The spelling of 409378 in words is "four hundred nine thousand, three hundred seventy-eight".