4183978 has 8 divisors (see below), whose sum is σ = 6286500. Its totient is φ = 2088480.

The previous prime is 4183973. The next prime is 4184017. The reversal of 4183978 is 8793814.

It can be written as a sum of positive squares in 2 ways, for example, as 2913849 + 1270129 = 1707^2 + 1127^2 .

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 4183978.

It is not an unprimeable number, because it can be changed into a prime (4183973) 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, 148 + ... + 2896.

Almost surely, 2^4183978 is an apocalyptic number.

4183978 is a deficient number, since it is larger than the sum of its proper divisors (2102522).

4183978 is a wasteful number, since it uses less digits than its factorization.

4183978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3512.

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

The square root of 4183978 is about 2045.4774503768. The cubic root of 4183978 is about 161.1374416295.

The spelling of 4183978 in words is "four million, one hundred eighty-three thousand, nine hundred seventy-eight".