3977545 has 16 divisors (see below), whose sum is σ = 5608512. Its totient is φ = 2669760.

The previous prime is 3977527. The next prime is 3977549. The reversal of 3977545 is 5457793.

3977545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-3977545 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 3977498 and 3977507.

It is not an unprimeable number, because it can be changed into a prime (3977549) 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 15 ways as a sum of consecutive naturals, for example, 2067 + ... + 3496.

It is an arithmetic number, because the mean of its divisors is an integer number (350532).

Almost surely, 2^3977545 is an apocalyptic number.

It is an amenable number.

3977545 is a deficient number, since it is larger than the sum of its proper divisors (1630967).

3977545 is a wasteful number, since it uses less digits than its factorization.

3977545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5592.

The product of its digits is 132300, while the sum is 40.

The square root of 3977545 is about 1994.3783492607. The cubic root of 3977545 is about 158.4425051943.

The spelling of 3977545 in words is "three million, nine hundred seventy-seven thousand, five hundred forty-five".