3977305 has 4 divisors (see below), whose sum is σ = 4772772. Its totient is φ = 3181840.

The previous prime is 3977293. The next prime is 3977317. The reversal of 3977305 is 5037793.

3977305 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 is an interprime number because it is at equal distance from previous prime (3977293) and next prime (3977317).

It can be written as a sum of positive squares in 2 ways, for example, as 751689 + 3225616 = 867^2 + 1796^2 .

It is not a de Polignac number, because 3977305 - 2⁵ = 3977273 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, 397726 + ... + 397735.

It is an arithmetic number, because the mean of its divisors is an integer number (1193193).

Almost surely, 2^3977305 is an apocalyptic number.

It is an amenable number.

3977305 is a deficient number, since it is larger than the sum of its proper divisors (795467).

3977305 is an equidigital number, since it uses as much as digits as its factorization.

3977305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795466.

The product of its (nonzero) digits is 19845, while the sum is 34.

The square root of 3977305 is about 1994.3181792282. The cubic root of 3977305 is about 158.4393183905.

The spelling of 3977305 in words is "three million, nine hundred seventy-seven thousand, three hundred five".