9144421 has 12 divisors (see below), whose sum is σ = 10804320. Its totient is φ = 7672080.

The previous prime is 9144413. The next prime is 9144427. The reversal of 9144421 is 1244419.

It is not a de Polignac number, because 9144421 - 2³ = 9144413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9144427) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 601 + ... + 4318.

It is an arithmetic number, because the mean of its divisors is an integer number (900360).

Almost surely, 2^9144421 is an apocalyptic number.

It is an amenable number.

9144421 is a deficient number, since it is larger than the sum of its proper divisors (1659899).

9144421 is a wasteful number, since it uses less digits than its factorization.

9144421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4956 (or 4943 counting only the distinct ones).

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

The square root of 9144421 is about 3023.9743715845. The cubic root of 9144421 is about 209.1151048989.

It can be divided in two parts, 914 and 4421, that added together give a palindrome (5335).

The spelling of 9144421 in words is "nine million, one hundred forty-four thousand, four hundred twenty-one".