3959789 has 4 divisors (see below), whose sum is σ = 4034556. Its totient is φ = 3885024.

The previous prime is 3959729. The next prime is 3959801. The reversal of 3959789 is 9879593.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9879593 = 163 ⋅60611.

It can be written as a sum of positive squares in 2 ways, for example, as 3422500 + 537289 = 1850^2 + 733^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3959789 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 (3959719) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37304 + ... + 37409.

It is an arithmetic number, because the mean of its divisors is an integer number (1008639).

Almost surely, 2^3959789 is an apocalyptic number.

It is an amenable number.

3959789 is a deficient number, since it is larger than the sum of its proper divisors (74767).

3959789 is an equidigital number, since it uses as much as digits as its factorization.

3959789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74766.

The product of its digits is 612360, while the sum is 50.

The square root of 3959789 is about 1989.9218577623. The cubic root of 3959789 is about 158.2063878749.

The spelling of 3959789 in words is "three million, nine hundred fifty-nine thousand, seven hundred eighty-nine".