3984378 has 32 divisors (see below), whose sum is σ = 8294400. Its totient is φ = 1275120.

The previous prime is 3984347. The next prime is 3984389. The reversal of 3984378 is 8734893.

It is a d-powerful number, because it can be written as 3¹² + 9³ + 8 + 4³ + 3¹² + 7⁷ + 8⁷ .

3984378 is a modest number, since divided by 4378 gives 398 as remainder.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19923 + ... + 20121.

It is an arithmetic number, because the mean of its divisors is an integer number (259200).

Almost surely, 2^3984378 is an apocalyptic number.

3984378 is an abundant number, since it is smaller than the sum of its proper divisors (4310022).

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

3984378 is a wasteful number, since it uses less digits than its factorization.

3984378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322.

The product of its digits is 145152, while the sum is 42.

The square root of 3984378 is about 1996.0906793029. The cubic root of 3984378 is about 158.5331824233.

The spelling of 3984378 in words is "three million, nine hundred eighty-four thousand, three hundred seventy-eight".