4644649 has 4 divisors (see below), whose sum is σ = 4661460. Its totient is φ = 4627840.

The previous prime is 4644631. The next prime is 4644667. The reversal of 4644649 is 9464464.

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

It is an interprime number because it is at equal distance from previous prime (4644631) and next prime (4644667).

It can be written as a sum of positive squares in 2 ways, for example, as 3732624 + 912025 = 1932^2 + 955^2 .

It is a cyclic number.

It is not a de Polignac number, because 4644649 - 2⁵ = 4644617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4644149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7984 + ... + 8545.

It is an arithmetic number, because the mean of its divisors is an integer number (1165365).

Almost surely, 2^4644649 is an apocalyptic number.

It is an amenable number.

4644649 is a deficient number, since it is larger than the sum of its proper divisors (16811).

4644649 is a wasteful number, since it uses less digits than its factorization.

4644649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16810.

The product of its digits is 82944, while the sum is 37.

The square root of 4644649 is about 2155.1447747193. The cubic root of 4644649 is about 166.8467045592.

The spelling of 4644649 in words is "four million, six hundred forty-four thousand, six hundred forty-nine".