4421649 has 16 divisors (see below), whose sum is σ = 6289920. Its totient is φ = 2753280.

The previous prime is 4421633. The next prime is 4421653. The reversal of 4421649 is 9461244.

It is not a de Polignac number, because 4421649 - 2⁴ = 4421633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4421689) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8992 + ... + 9470.

It is an arithmetic number, because the mean of its divisors is an integer number (393120).

Almost surely, 2^4421649 is an apocalyptic number.

It is an amenable number.

4421649 is a deficient number, since it is larger than the sum of its proper divisors (1868271).

4421649 is a wasteful number, since it uses less digits than its factorization.

4421649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680.

The product of its digits is 6912, while the sum is 30.

The square root of 4421649 is about 2102.7717422488. The cubic root of 4421649 is about 164.1325643417.

The spelling of 4421649 in words is "four million, four hundred twenty-one thousand, six hundred forty-nine".