3809689 has 8 divisors (see below), whose sum is σ = 4173120. Its totient is φ = 3456336.

The previous prime is 3809681. The next prime is 3809699. The reversal of 3809689 is 9869083.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3809689 - 2³ = 3809681 is a prime.

It is a Duffinian number.

3809689 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3809681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1717 + ... + 3250.

It is an arithmetic number, because the mean of its divisors is an integer number (521640).

Almost surely, 2^3809689 is an apocalyptic number.

It is an amenable number.

3809689 is a deficient number, since it is larger than the sum of its proper divisors (363431).

3809689 is a wasteful number, since it uses less digits than its factorization.

3809689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5039.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 3809689 is about 1951.8424629052. The cubic root of 3809689 is about 156.1815905333.

The spelling of 3809689 in words is "three million, eight hundred nine thousand, six hundred eighty-nine".