4421647 has 4 divisors (see below), whose sum is σ = 4524520. Its totient is φ = 4318776.

The previous prime is 4421633. The next prime is 4421653. The reversal of 4421647 is 7461244.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4421647 - 2¹¹ = 4419599 is a prime.

It is a Duffinian number.

4421647 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4421617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51372 + ... + 51457.

It is an arithmetic number, because the mean of its divisors is an integer number (1131130).

Almost surely, 2^4421647 is an apocalyptic number.

4421647 is a deficient number, since it is larger than the sum of its proper divisors (102873).

4421647 is a wasteful number, since it uses less digits than its factorization.

4421647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102872.

The product of its digits is 5376, while the sum is 28.

The square root of 4421647 is about 2102.7712666859. The cubic root of 4421647 is about 164.1325395949.

The spelling of 4421647 in words is "four million, four hundred twenty-one thousand, six hundred forty-seven".