4144689 has 10 divisors (see below), whose sum is σ = 6191570. Its totient is φ = 2763072.

The previous prime is 4144681. The next prime is 4144711. The reversal of 4144689 is 9864414.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2624400 + 1520289 = 1620^2 + 1233^2 .

It is not a de Polignac number, because 4144689 - 2³ = 4144681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4144681) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 25504 + ... + 25665.

It is an arithmetic number, because the mean of its divisors is an integer number (619157).

Almost surely, 2^4144689 is an apocalyptic number.

It is an amenable number.

4144689 is a deficient number, since it is larger than the sum of its proper divisors (2046881).

4144689 is an equidigital number, since it uses as much as digits as its factorization.

4144689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51181 (or 51172 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 4144689 is about 2035.8509277450. The cubic root of 4144689 is about 160.6314758148.

The spelling of 4144689 in words is "four million, one hundred forty-four thousand, six hundred eighty-nine".