4144921 has 4 divisors (see below), whose sum is σ = 4521744. Its totient is φ = 3768100.

The previous prime is 4144919. The next prime is 4144961. The reversal of 4144921 is 1294414.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4144921 - 2¹ = 4144919 is a prime.

It is a Duffinian number.

4144921 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4144961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188395 + ... + 188416.

It is an arithmetic number, because the mean of its divisors is an integer number (1130436).

Almost surely, 2^4144921 is an apocalyptic number.

It is an amenable number.

4144921 is a deficient number, since it is larger than the sum of its proper divisors (376823).

4144921 is a wasteful number, since it uses less digits than its factorization.

4144921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376822.

The product of its digits is 1152, while the sum is 25.

The square root of 4144921 is about 2035.9079055792. The cubic root of 4144921 is about 160.6344728878.

It can be divided in two parts, 414 and 4921, that added together give a palindrome (5335).

The spelling of 4144921 in words is "four million, one hundred forty-four thousand, nine hundred twenty-one".