4861985 has 16 divisors (see below), whose sum is σ = 6147792. Its totient is φ = 3686400.

The previous prime is 4861979. The next prime is 4861991. The reversal of 4861985 is 5891684.

It is an interprime number because it is at equal distance from previous prime (4861979) and next prime (4861991).

It can be written as a sum of positive squares in 8 ways, for example, as 57121 + 4804864 = 239^2 + 2192^2 .

It is not a de Polignac number, because 4861985 - 2⁶ = 4861921 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 7265 + ... + 7905.

It is an arithmetic number, because the mean of its divisors is an integer number (384237).

Almost surely, 2^4861985 is an apocalyptic number.

It is an amenable number.

4861985 is a deficient number, since it is larger than the sum of its proper divisors (1285807).

4861985 is a wasteful number, since it uses less digits than its factorization.

4861985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724.

The product of its digits is 69120, while the sum is 41.

The square root of 4861985 is about 2204.9909296866. The cubic root of 4861985 is about 169.4095432512.

The spelling of 4861985 in words is "four million, eight hundred sixty-one thousand, nine hundred eighty-five".