3973969 has 4 divisors (see below), whose sum is σ = 3980340. Its totient is φ = 3967600.

The previous prime is 3973943. The next prime is 3973973. The reversal of 3973969 is 9693793.

3973969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9693793 = 31 ⋅312703.

It can be written as a sum of positive squares in 2 ways, for example, as 2250000 + 1723969 = 1500^2 + 1313^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3973969 is a prime.

It is a super-5 number, since 5×3973969⁵ (a number of 34 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3973919) 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 3 ways as a sum of consecutive naturals, for example, 2134 + ... + 3535.

It is an arithmetic number, because the mean of its divisors is an integer number (995085).

Almost surely, 2^3973969 is an apocalyptic number.

It is an amenable number.

3973969 is a deficient number, since it is larger than the sum of its proper divisors (6371).

3973969 is an equidigital number, since it uses as much as digits as its factorization.

3973969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6370.

The product of its digits is 275562, while the sum is 46.

The square root of 3973969 is about 1993.4816277057. The cubic root of 3973969 is about 158.3950085366.

The spelling of 3973969 in words is "three million, nine hundred seventy-three thousand, nine hundred sixty-nine".