4140444 has 48 divisors (see below), whose sum is σ = 12047616. Its totient is φ = 1075200.

The previous prime is 4140439. The next prime is 4140457. The reversal of 4140444 is 4440414.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 4140444.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1317 + ... + 3164.

It is an arithmetic number, because the mean of its divisors is an integer number (250992).

Almost surely, 2^4140444 is an apocalyptic number.

4140444 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

4140444 is an abundant number, since it is smaller than the sum of its proper divisors (7907172).

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

4140444 is a wasteful number, since it uses less digits than its factorization.

4140444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4506 (or 4504 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 4140444 is about 2034.8080990600. The cubic root of 4140444 is about 160.5766173729.

Adding to 4140444 its reverse (4440414), we get a palindrome (8580858).

The spelling of 4140444 in words is "four million, one hundred forty thousand, four hundred forty-four".