3977425 has 6 divisors (see below), whose sum is σ = 4932038. Its totient is φ = 3181920.

The previous prime is 3977419. The next prime is 3977429. The reversal of 3977425 is 5247793.

3977425 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 25281 + 3952144 = 159^2 + 1988^2 .

It is not a de Polignac number, because 3977425 - 2⁹ = 3976913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3977429) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 79524 + ... + 79573.

Almost surely, 2^3977425 is an apocalyptic number.

It is an amenable number.

3977425 is a deficient number, since it is larger than the sum of its proper divisors (954613).

3977425 is a wasteful number, since it uses less digits than its factorization.

3977425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159107 (or 159102 counting only the distinct ones).

The product of its digits is 52920, while the sum is 37.

The square root of 3977425 is about 1994.3482644714. The cubic root of 3977425 is about 158.4409118084.

The spelling of 3977425 in words is "three million, nine hundred seventy-seven thousand, four hundred twenty-five".