3945530 has 16 divisors (see below), whose sum is σ = 7520040. Its totient is φ = 1485312.

The previous prime is 3945527. The next prime is 3945607. The reversal of 3945530 is 355493.

3945530 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 4 ways, for example, as 3806401 + 139129 = 1951^2 + 373^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3945493 and 3945502.

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 7 ways as a sum of consecutive naturals, for example, 11435 + ... + 11774.

Almost surely, 2^3945530 is an apocalyptic number.

3945530 is a deficient number, since it is larger than the sum of its proper divisors (3574510).

3945530 is a wasteful number, since it uses less digits than its factorization.

3945530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23233.

The product of its (nonzero) digits is 8100, while the sum is 29.

The square root of 3945530 is about 1986.3358225637. The cubic root of 3945530 is about 158.0162617456.

It can be divided in two parts, 39 and 45530, that multiplied together give a triangular number (1775670 = T₁₈₈₄).

The spelling of 3945530 in words is "three million, nine hundred forty-five thousand, five hundred thirty".