4639885 has 8 divisors (see below), whose sum is σ = 5673240. Its totient is φ = 3641664.

The previous prime is 4639883. The next prime is 4639891. The reversal of 4639885 is 5889364.

It can be written as a sum of positive squares in 4 ways, for example, as 30276 + 4609609 = 174^2 + 2147^2 .

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 4639885 - 2¹ = 4639883 is a prime.

It is a d-powerful number, because it can be written as 4¹¹ + 6⁶ + 3³ + 9² + 8⁴ + 8⁴ + 5⁸ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4639883) 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 7 ways as a sum of consecutive naturals, for example, 8490 + ... + 9019.

It is an arithmetic number, because the mean of its divisors is an integer number (709155).

Almost surely, 2^4639885 is an apocalyptic number.

It is an amenable number.

4639885 is a deficient number, since it is larger than the sum of its proper divisors (1033355).

4639885 is a wasteful number, since it uses less digits than its factorization.

4639885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17567.

The product of its digits is 207360, while the sum is 43.

The square root of 4639885 is about 2154.0392289835. The cubic root of 4639885 is about 166.7896403536.

The spelling of 4639885 in words is "four million, six hundred thirty-nine thousand, eight hundred eighty-five".