3975309 has 24 divisors (see below), whose sum is σ = 6296472. Its totient is φ = 2401920.

The previous prime is 3975289. The next prime is 3975341. The reversal of 3975309 is 9035793.

3975309 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 459684 + 3515625 = 678^2 + 1875^2 .

It is not a de Polignac number, because 3975309 - 2⁵ = 3975277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3975379) 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 23 ways as a sum of consecutive naturals, for example, 6859 + ... + 7415.

It is an arithmetic number, because the mean of its divisors is an integer number (262353).

Almost surely, 2^3975309 is an apocalyptic number.

3975309 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

3975309 is a deficient number, since it is larger than the sum of its proper divisors (2321163).

3975309 is a wasteful number, since it uses less digits than its factorization.

3975309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637 (or 634 counting only the distinct ones).

The product of its (nonzero) digits is 25515, while the sum is 36.

The square root of 3975309 is about 1993.8176947755. The cubic root of 3975309 is about 158.4128098379.

The spelling of 3975309 in words is "three million, nine hundred seventy-five thousand, three hundred nine".