4421624 has 8 divisors (see below), whose sum is σ = 8290560. Its totient is φ = 2210808.

The previous prime is 4421621. The next prime is 4421633. The reversal of 4421624 is 4261244.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 4421624.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4421621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 276344 + ... + 276359.

It is an arithmetic number, because the mean of its divisors is an integer number (1036320).

Almost surely, 2^4421624 is an apocalyptic number.

It is an amenable number.

4421624 is a deficient number, since it is larger than the sum of its proper divisors (3868936).

4421624 is a wasteful number, since it uses less digits than its factorization.

4421624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552709 (or 552705 counting only the distinct ones).

The product of its digits is 1536, while the sum is 23.

The square root of 4421624 is about 2102.7657977055. The cubic root of 4421624 is about 164.1322550060.

Adding to 4421624 its reverse (4261244), we get a palindrome (8682868).

The spelling of 4421624 in words is "four million, four hundred twenty-one thousand, six hundred twenty-four".