3840309 has 12 divisors (see below), whose sum is σ = 6051552. Its totient is φ = 2327400.

The previous prime is 3840307. The next prime is 3840313. The reversal of 3840309 is 9030483.

It is not a de Polignac number, because 3840309 - 2¹ = 3840307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3840301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19297 + ... + 19494.

It is an arithmetic number, because the mean of its divisors is an integer number (504296).

Almost surely, 2^3840309 is an apocalyptic number.

It is an amenable number.

3840309 is a deficient number, since it is larger than the sum of its proper divisors (2211243).

3840309 is a wasteful number, since it uses less digits than its factorization.

3840309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38808 (or 38805 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 3840309 is about 1959.6706355916. The cubic root of 3840309 is about 156.5989058608.

The spelling of 3840309 in words is "three million, eight hundred forty thousand, three hundred nine".