4091078 has 4 divisors (see below), whose sum is σ = 6136620. Its totient is φ = 2045538.

The previous prime is 4091071. The next prime is 4091081. The reversal of 4091078 is 8701904.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 4091078.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4091071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1022768 + ... + 1022771.

It is an arithmetic number, because the mean of its divisors is an integer number (1534155).

Almost surely, 2^4091078 is an apocalyptic number.

4091078 is a deficient number, since it is larger than the sum of its proper divisors (2045542).

4091078 is a wasteful number, since it uses less digits than its factorization.

4091078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2045541.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 4091078 is about 2022.6413424035. The cubic root of 4091078 is about 159.9358857703.

The spelling of 4091078 in words is "four million, ninety-one thousand, seventy-eight".