3838809 has 16 divisors (see below), whose sum is σ = 5548032. Its totient is φ = 2347008.

The previous prime is 3838801. The next prime is 3838811. The reversal of 3838809 is 9088383.

It is a happy number.

It is not a de Polignac number, because 3838809 - 2³ = 3838801 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (3838801) 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, 9832 + ... + 10214.

It is an arithmetic number, because the mean of its divisors is an integer number (346752).

Almost surely, 2^3838809 is an apocalyptic number.

3838809 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

3838809 is a deficient number, since it is larger than the sum of its proper divisors (1709223).

3838809 is a wasteful number, since it uses less digits than its factorization.

3838809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656.

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 3838809 is about 1959.2878808383. The cubic root of 3838809 is about 156.5785143638.

The spelling of 3838809 in words is "three million, eight hundred thirty-eight thousand, eight hundred nine".