3968745 has 32 divisors (see below), whose sum is σ = 7050240. Its totient is φ = 1890240.

The previous prime is 3968743. The next prime is 3968761. The reversal of 3968745 is 5478693.

It is a happy number.

It is not a de Polignac number, because 3968745 - 2¹ = 3968743 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3968697 and 3968706.

It is not an unprimeable number, because it can be changed into a prime (3968743) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 10876 + ... + 11234.

It is an arithmetic number, because the mean of its divisors is an integer number (220320).

Almost surely, 2^3968745 is an apocalyptic number.

It is an amenable number.

3968745 is a deficient number, since it is larger than the sum of its proper divisors (3081495).

3968745 is a wasteful number, since it uses less digits than its factorization.

3968745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445.

The product of its digits is 181440, while the sum is 42.

The square root of 3968745 is about 1992.1709264016. The cubic root of 3968745 is about 158.3255717956.

The spelling of 3968745 in words is "three million, nine hundred sixty-eight thousand, seven hundred forty-five".