4040778 has 64 divisors (see below), whose sum is σ = 9953280. Its totient is φ = 1068672.

The previous prime is 4040741. The next prime is 4040779. The reversal of 4040778 is 8770404.

4040778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (4040779) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 45358 + ... + 45446.

It is an arithmetic number, because the mean of its divisors is an integer number (155520).

Almost surely, 2^4040778 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4040778, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4976640).

4040778 is an abundant number, since it is smaller than the sum of its proper divisors (5912502).

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

4040778 is a wasteful number, since it uses less digits than its factorization.

4040778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171.

The product of its (nonzero) digits is 6272, while the sum is 30.

The square root of 4040778 is about 2010.1686496411. The cubic root of 4040778 is about 159.2777077855.

The spelling of 4040778 in words is "four million, forty thousand, seven hundred seventy-eight".