3923709 has 12 divisors (see below), whose sum is σ = 5522976. Its totient is φ = 2477448.

The previous prime is 3923687. The next prime is 3923723. The reversal of 3923709 is 9073293.

It is not a de Polignac number, because 3923709 - 2¹² = 3919613 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 3923709.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3923779) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 729 + ... + 2894.

It is an arithmetic number, because the mean of its divisors is an integer number (460248).

Almost surely, 2^3923709 is an apocalyptic number.

It is an amenable number.

3923709 is a deficient number, since it is larger than the sum of its proper divisors (1599267).

3923709 is a wasteful number, since it uses less digits than its factorization.

3923709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3664 (or 3645 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 33.

The square root of 3923709 is about 1980.8354298124. The cubic root of 3923709 is about 157.7244167932.

The spelling of 3923709 in words is "three million, nine hundred twenty-three thousand, seven hundred nine".