4223978 has 8 divisors (see below), whose sum is σ = 6912000. Its totient is φ = 1919980.

The previous prime is 4223977. The next prime is 4223981. The reversal of 4223978 is 8793224.

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

It is not an unprimeable number, because it can be changed into a prime (4223977) 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, 95978 + ... + 96021.

It is an arithmetic number, because the mean of its divisors is an integer number (864000).

Almost surely, 2^4223978 is an apocalyptic number.

4223978 is a deficient number, since it is larger than the sum of its proper divisors (2688022).

4223978 is a wasteful number, since it uses less digits than its factorization.

4223978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192012.

The product of its digits is 24192, while the sum is 35.

The square root of 4223978 is about 2055.2318603992. The cubic root of 4223978 is about 161.6493201827.

The spelling of 4223978 in words is "four million, two hundred twenty-three thousand, nine hundred seventy-eight".