4381978 has 8 divisors (see below), whose sum is σ = 6665760. Its totient is φ = 2160060.

The previous prime is 4381973. The next prime is 4381997. The reversal of 4381978 is 8791834.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 4381978.

It is not an unprimeable number, because it can be changed into a prime (4381973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15288 + ... + 15571.

It is an arithmetic number, because the mean of its divisors is an integer number (833220).

Almost surely, 2^4381978 is an apocalyptic number.

4381978 is a deficient number, since it is larger than the sum of its proper divisors (2283782).

4381978 is a wasteful number, since it uses less digits than its factorization.

4381978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30932.

The product of its digits is 48384, while the sum is 40.

The square root of 4381978 is about 2093.3174627848. The cubic root of 4381978 is about 163.6402236089.

The spelling of 4381978 in words is "four million, three hundred eighty-one thousand, nine hundred seventy-eight".