4001814 has 12 divisors (see below), whose sum is σ = 8670636. Its totient is φ = 1333932.

The previous prime is 4001807. The next prime is 4001827. The reversal of 4001814 is 4181004.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 222323 = 4001814 / (4 + 0 + 0 + 1 + 8 + 1 + 4).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 111144 + ... + 111179.

It is an arithmetic number, because the mean of its divisors is an integer number (722553).

Almost surely, 2^4001814 is an apocalyptic number.

4001814 is an abundant number, since it is smaller than the sum of its proper divisors (4668822).

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

4001814 is a wasteful number, since it uses less digits than its factorization.

4001814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222331 (or 222328 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 4001814 is about 2000.4534485961. The cubic root of 4001814 is about 158.7640977829.

Adding to 4001814 its reverse (4181004), we get a palindrome (8182818).

The spelling of 4001814 in words is "four million, one thousand, eight hundred fourteen".