4194978 has 16 divisors (see below), whose sum is σ = 8410176. Its totient is φ = 1394960.

The previous prime is 4194973. The next prime is 4194989. The reversal of 4194978 is 8794914.

It is a d-powerful number, because it can be written as 4³ + 1 + 9 + 4¹¹ + 9² + 7 + 8³ .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4194973) 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, 3988 + ... + 4928.

It is an arithmetic number, because the mean of its divisors is an integer number (525636).

Almost surely, 2^4194978 is an apocalyptic number.

4194978 is an abundant number, since it is smaller than the sum of its proper divisors (4215198).

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

4194978 is a wasteful number, since it uses less digits than its factorization.

4194978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1689.

The product of its digits is 72576, while the sum is 42.

The square root of 4194978 is about 2048.1645441712. The cubic root of 4194978 is about 161.2785322986.

The spelling of 4194978 in words is "four million, one hundred ninety-four thousand, nine hundred seventy-eight".