4440621 has 8 divisors (see below), whose sum is σ = 6269184. Its totient is φ = 2786240.

The previous prime is 4440619. The next prime is 4440637. The reversal of 4440621 is 1260444.

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 4440621 - 2¹ = 4440619 is a prime.

It is a super-2 number, since 2×4440621² = 39438229731282, which contains 22 as substring.

4440621 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4440641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43485 + ... + 43586.

It is an arithmetic number, because the mean of its divisors is an integer number (783648).

Almost surely, 2^4440621 is an apocalyptic number.

It is an amenable number.

4440621 is a deficient number, since it is larger than the sum of its proper divisors (1828563).

4440621 is a wasteful number, since it uses less digits than its factorization.

4440621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87091.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 4440621 is about 2107.2781021972. The cubic root of 4440621 is about 164.3669776381.

The spelling of 4440621 in words is "four million, four hundred forty thousand, six hundred twenty-one".