4989985 has 32 divisors (see below), whose sum is σ = 8047872. Its totient is φ = 2868480.

The previous prime is 4989979. The next prime is 4989991. The reversal of 4989985 is 5899894.

It is an interprime number because it is at equal distance from previous prime (4989979) and next prime (4989991).

It is not a de Polignac number, because 4989985 - 2⁵ = 4989953 is a prime.

4989985 is a lucky number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4507 + ... + 5503.

It is an arithmetic number, because the mean of its divisors is an integer number (251496).

Almost surely, 2^4989985 is an apocalyptic number.

It is an amenable number.

4989985 is a deficient number, since it is larger than the sum of its proper divisors (3057887).

4989985 is a wasteful number, since it uses less digits than its factorization.

4989985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1033.

The product of its digits is 933120, while the sum is 52.

The square root of 4989985 is about 2233.8274329052. The cubic root of 4989985 is about 170.8833489616.

Subtracting 4989985 from its reverse (5899894), we obtain a palindrome (909909).

It can be divided in two parts, 4 and 989985, that added together give a palindrome (989989).

The spelling of 4989985 in words is "four million, nine hundred eighty-nine thousand, nine hundred eighty-five".