3867309 has 6 divisors (see below), whose sum is σ = 5586126. Its totient is φ = 2578200.

The previous prime is 3867271. The next prime is 3867323. The reversal of 3867309 is 9037683.

3867309 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 3861225 + 6084 = 1965^2 + 78^2 .

It is not a de Polignac number, because 3867309 - 2⁷ = 3867181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3867349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 214842 + ... + 214859.

It is an arithmetic number, because the mean of its divisors is an integer number (931021).

Almost surely, 2^3867309 is an apocalyptic number.

It is an amenable number.

3867309 is a deficient number, since it is larger than the sum of its proper divisors (1718817).

3867309 is a wasteful number, since it uses less digits than its factorization.

3867309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429707 (or 429704 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 3867309 is about 1966.5474822643. The cubic root of 3867309 is about 156.9650482732.

The spelling of 3867309 in words is "three million, eight hundred sixty-seven thousand, three hundred nine".