4421631 has 8 divisors (see below), whose sum is σ = 6006960. Its totient is φ = 2892032.

The previous prime is 4421621. The next prime is 4421633. The reversal of 4421631 is 1361244.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4421631 - 2⁶ = 4421567 is a prime.

It is a super-2 number, since 2×4421631² = 39101641400322, which contains 22 as substring.

It is a nialpdrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 4421598 and 4421607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4421633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13746 + ... + 14063.

It is an arithmetic number, because the mean of its divisors is an integer number (750870).

Almost surely, 2^4421631 is an apocalyptic number.

4421631 is a deficient number, since it is larger than the sum of its proper divisors (1585329).

4421631 is a wasteful number, since it uses less digits than its factorization.

4421631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27865.

The product of its digits is 576, while the sum is 21.

The square root of 4421631 is about 2102.7674621793. The cubic root of 4421631 is about 164.1323416201.

Adding to 4421631 its reverse (1361244), we get a palindrome (5782875).

The spelling of 4421631 in words is "four million, four hundred twenty-one thousand, six hundred thirty-one".