4013444 has 6 divisors (see below), whose sum is σ = 7023534. Its totient is φ = 2006720.

The previous prime is 4013441. The next prime is 4013461. The reversal of 4013444 is 4443104.

It can be written as a sum of positive squares in only one way, i.e., 3564544 + 448900 = 1888^2 + 670^2 .

It is a super-2 number, since 2×4013444² = 32215465482272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4013441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501677 + ... + 501684.

It is an arithmetic number, because the mean of its divisors is an integer number (1170589).

Almost surely, 2^4013444 is an apocalyptic number.

It is an amenable number.

4013444 is a deficient number, since it is larger than the sum of its proper divisors (3010090).

4013444 is a wasteful number, since it uses less digits than its factorization.

4013444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1003365 (or 1003363 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 4013444 is about 2003.3581806557. The cubic root of 4013444 is about 158.9177481571.

Adding to 4013444 its reverse (4443104), we get a palindrome (8456548).

The spelling of 4013444 in words is "four million, thirteen thousand, four hundred forty-four".