3958709 has 6 divisors (see below), whose sum is σ = 4054806. Its totient is φ = 3864840.

The previous prime is 3958697. The next prime is 3958727. The reversal of 3958709 is 9078593.

It can be written as a sum of positive squares in only one way, i.e., 3912484 + 46225 = 1978^2 + 215^2 .

It is not a de Polignac number, because 3958709 - 2¹⁶ = 3893173 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3958789) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 779 + ... + 2919.

It is an arithmetic number, because the mean of its divisors is an integer number (675801).

Almost surely, 2^3958709 is an apocalyptic number.

It is an amenable number.

3958709 is a deficient number, since it is larger than the sum of its proper divisors (96097).

3958709 is an equidigital number, since it uses as much as digits as its factorization.

3958709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2227 (or 2184 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 3958709 is about 1989.6504718166. The cubic root of 3958709 is about 158.1920034018.

The spelling of 3958709 in words is "three million, nine hundred fifty-eight thousand, seven hundred nine".