4051978 has 16 divisors (see below), whose sum is σ = 7312320. Its totient is φ = 1645056.

The previous prime is 4051951. The next prime is 4051987. The reversal of 4051978 is 8791504.

It is a happy number.

4051978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 7351 + ... + 7882.

It is an arithmetic number, because the mean of its divisors is an integer number (457020).

Almost surely, 2^4051978 is an apocalyptic number.

4051978 is a deficient number, since it is larger than the sum of its proper divisors (3260342).

4051978 is a wasteful number, since it uses less digits than its factorization.

4051978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15261.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 4051978 is about 2012.9525578115. The cubic root of 4051978 is about 159.4247310138.

The spelling of 4051978 in words is "four million, fifty-one thousand, nine hundred seventy-eight".