3841209 has 16 divisors (see below), whose sum is σ = 5745600. Its totient is φ = 2536128.

The previous prime is 3841199. The next prime is 3841219. The reversal of 3841209 is 9021483.

It is an interprime number because it is at equal distance from previous prime (3841199) and next prime (3841219).

It is not a de Polignac number, because 3841209 - 2⁸ = 3840953 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (3841219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2422 + ... + 3680.

It is an arithmetic number, because the mean of its divisors is an integer number (359100).

Almost surely, 2^3841209 is an apocalyptic number.

It is an amenable number.

3841209 is a deficient number, since it is larger than the sum of its proper divisors (1904391).

3841209 is a wasteful number, since it uses less digits than its factorization.

3841209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1381 (or 1375 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 3841209 is about 1959.9002525639. The cubic root of 3841209 is about 156.6111382104.

The spelling of 3841209 in words is "three million, eight hundred forty-one thousand, two hundred nine".