3743809 has 4 divisors (see below), whose sum is σ = 3747760. Its totient is φ = 3739860.

The previous prime is 3743797. The next prime is 3743837. The reversal of 3743809 is 9083473.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 3743809 - 2⁷ = 3743681 is a prime.

It is a super-2 number, since 2×3743809² = 28032211656962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3743309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 394 + ... + 2764.

It is an arithmetic number, because the mean of its divisors is an integer number (936940).

Almost surely, 2^3743809 is an apocalyptic number.

It is an amenable number.

3743809 is a deficient number, since it is larger than the sum of its proper divisors (3951).

3743809 is a wasteful number, since it uses less digits than its factorization.

3743809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3950.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 3743809 is about 1934.8925034740. The cubic root of 3743809 is about 155.2760809758.

The spelling of 3743809 in words is "three million, seven hundred forty-three thousand, eight hundred nine".