3954985 has 4 divisors (see below), whose sum is σ = 4745988. Its totient is φ = 3163984.

The previous prime is 3954971. The next prime is 3954997. The reversal of 3954985 is 5894593.

It is a happy number.

3954985 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 3069504 + 885481 = 1752^2 + 941^2 .

It is a cyclic number.

It is not a de Polignac number, because 3954985 - 2⁹ = 3954473 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 395494 + ... + 395503.

It is an arithmetic number, because the mean of its divisors is an integer number (1186497).

Almost surely, 2^3954985 is an apocalyptic number.

It is an amenable number.

3954985 is a deficient number, since it is larger than the sum of its proper divisors (791003).

3954985 is an equidigital number, since it uses as much as digits as its factorization.

3954985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791002.

The product of its digits is 194400, while the sum is 43.

The square root of 3954985 is about 1988.7144088581. The cubic root of 3954985 is about 158.1423835347.

The spelling of 3954985 in words is "three million, nine hundred fifty-four thousand, nine hundred eighty-five".