4198978 has 16 divisors (see below), whose sum is σ = 7335360. Its totient is φ = 1765296.

The previous prime is 4198973. The next prime is 4199003. The reversal of 4198978 is 8798914.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (4198973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2088 + ... + 3571.

It is an arithmetic number, because the mean of its divisors is an integer number (458460).

Almost surely, 2^4198978 is an apocalyptic number.

4198978 is a deficient number, since it is larger than the sum of its proper divisors (3136382).

4198978 is a wasteful number, since it uses less digits than its factorization.

4198978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5721.

The product of its digits is 145152, while the sum is 46.

The square root of 4198978 is about 2049.1407955531. The cubic root of 4198978 is about 161.3297768418.

The spelling of 4198978 in words is "four million, one hundred ninety-eight thousand, nine hundred seventy-eight".