3709389 has 16 divisors (see below), whose sum is σ = 5299200. Its totient is φ = 2300976.

The previous prime is 3709357. The next prime is 3709397. The reversal of 3709389 is 9839073.

It is a happy number.

It is not a de Polignac number, because 3709389 - 2⁵ = 3709357 is a prime.

It is a Curzon number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3709319) 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, 2812 + ... + 3914.

It is an arithmetic number, because the mean of its divisors is an integer number (331200).

Almost surely, 2^3709389 is an apocalyptic number.

It is an amenable number.

3709389 is a deficient number, since it is larger than the sum of its proper divisors (1589811).

3709389 is a wasteful number, since it uses less digits than its factorization.

3709389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1184.

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 3709389 is about 1925.9774141978. The cubic root of 3709389 is about 154.7987537374.

The spelling of 3709389 in words is "three million, seven hundred nine thousand, three hundred eighty-nine".