4026985 has 4 divisors (see below), whose sum is σ = 4832388. Its totient is φ = 3221584.

The previous prime is 4026973. The next prime is 4026989. The reversal of 4026985 is 5896204.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 670761 + 3356224 = 819^2 + 1832^2 .

It is a cyclic number.

It is not a de Polignac number, because 4026985 - 2⁷ = 4026857 is a prime.

It is a Duffinian number.

4026985 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 4026985.

It is not an unprimeable number, because it can be changed into a prime (4026989) 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, 402694 + ... + 402703.

It is an arithmetic number, because the mean of its divisors is an integer number (1208097).

Almost surely, 2^4026985 is an apocalyptic number.

It is an amenable number.

4026985 is a deficient number, since it is larger than the sum of its proper divisors (805403).

4026985 is an equidigital number, since it uses as much as digits as its factorization.

4026985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805402.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 4026985 is about 2006.7349102460. The cubic root of 4026985 is about 159.0962722744.

The spelling of 4026985 in words is "four million, twenty-six thousand, nine hundred eighty-five".