3983945 has 32 divisors (see below), whose sum is σ = 5875200. Its totient is φ = 2587200.

The previous prime is 3983927. The next prime is 3983951. The reversal of 3983945 is 5493893.

3983945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3983945 - 2⁸ = 3983689 is a prime.

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 31 ways as a sum of consecutive naturals, for example, 39395 + ... + 39495.

It is an arithmetic number, because the mean of its divisors is an integer number (183600).

Almost surely, 2^3983945 is an apocalyptic number.

3983945 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3983945 is a deficient number, since it is larger than the sum of its proper divisors (1891255).

3983945 is a wasteful number, since it uses less digits than its factorization.

3983945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150 (or 136 counting only the distinct ones).

The product of its digits is 116640, while the sum is 41.

The square root of 3983945 is about 1995.9822143496. The cubic root of 3983945 is about 158.5274393810.

The spelling of 3983945 in words is "three million, nine hundred eighty-three thousand, nine hundred forty-five".