4638985 has 32 divisors (see below), whose sum is σ = 6531840. Its totient is φ = 3134208.

The previous prime is 4638979. The next prime is 4639003. The reversal of 4638985 is 5898364.

It is a cyclic number.

It is not a de Polignac number, because 4638985 - 2⁷ = 4638857 is a prime.

4638985 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43302 + ... + 43408.

It is an arithmetic number, because the mean of its divisors is an integer number (204120).

Almost surely, 2^4638985 is an apocalyptic number.

It is an amenable number.

4638985 is a deficient number, since it is larger than the sum of its proper divisors (1892855).

4638985 is a wasteful number, since it uses less digits than its factorization.

4638985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177.

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

The square root of 4638985 is about 2153.8303090077. The cubic root of 4638985 is about 166.7788555761.

The spelling of 4638985 in words is "four million, six hundred thirty-eight thousand, nine hundred eighty-five".