4001854 has 4 divisors (see below), whose sum is σ = 6002784. Its totient is φ = 2000926.

The previous prime is 4001849. The next prime is 4001863. The reversal of 4001854 is 4581004.

4001854 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 1000462 + ... + 1000465.

It is an arithmetic number, because the mean of its divisors is an integer number (1500696).

Almost surely, 2^4001854 is an apocalyptic number.

4001854 is a deficient number, since it is larger than the sum of its proper divisors (2000930).

4001854 is a wasteful number, since it uses less digits than its factorization.

4001854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2000929.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 4001854 is about 2000.4634463044. The cubic root of 4001854 is about 158.7646267549.

Adding to 4001854 its reverse (4581004), we get a palindrome (8582858).

The spelling of 4001854 in words is "four million, one thousand, eight hundred fifty-four".