3945430 has 16 divisors (see below), whose sum is σ = 7275744. Its totient is φ = 1539520.

The previous prime is 3945427. The next prime is 3945449. The reversal of 3945430 is 345493.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4402 + ... + 5221.

It is an arithmetic number, because the mean of its divisors is an integer number (454734).

Almost surely, 2^3945430 is an apocalyptic number.

3945430 is a deficient number, since it is larger than the sum of its proper divisors (3330314).

3945430 is a wasteful number, since it uses less digits than its factorization.

3945430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9671.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 3945430 is about 1986.3106504271. The cubic root of 3945430 is about 158.0149267530.

The spelling of 3945430 in words is "three million, nine hundred forty-five thousand, four hundred thirty".