4193978 has 8 divisors (see below), whose sum is σ = 6324480. Its totient is φ = 2085820.

The previous prime is 4193977. The next prime is 4194007. The reversal of 4193978 is 8793914.

It is a happy number.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4193971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5108 + ... + 5871.

It is an arithmetic number, because the mean of its divisors is an integer number (790560).

Almost surely, 2^4193978 is an apocalyptic number.

4193978 is a deficient number, since it is larger than the sum of its proper divisors (2130502).

4193978 is a wasteful number, since it uses less digits than its factorization.

4193978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11172.

The product of its digits is 54432, while the sum is 41.

The square root of 4193978 is about 2047.9204086097. The cubic root of 4193978 is about 161.2657160733.

The spelling of 4193978 in words is "four million, one hundred ninety-three thousand, nine hundred seventy-eight".