3881709 has 16 divisors (see below), whose sum is σ = 6193600. Its totient is φ = 2388528.

The previous prime is 3881699. The next prime is 3881711. The reversal of 3881709 is 9071883.

It is not a de Polignac number, because 3881709 - 2¹² = 3877613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3881209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5179 + ... + 5880.

It is an arithmetic number, because the mean of its divisors is an integer number (387100).

Almost surely, 2^3881709 is an apocalyptic number.

3881709 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

3881709 is a deficient number, since it is larger than the sum of its proper divisors (2311891).

3881709 is a wasteful number, since it uses less digits than its factorization.

3881709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11081 (or 11075 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 3881709 is about 1970.2053192497. The cubic root of 3881709 is about 157.1596277654.

The spelling of 3881709 in words is "three million, eight hundred eighty-one thousand, seven hundred nine".