3869009 has 2 divisors, whose sum is σ = 3869010. Its totient is φ = 3869008.

The previous prime is 3868999. The next prime is 3869023. The reversal of 3869009 is 9009683.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3598609 + 270400 = 1897^2 + 520^2 .

It is an emirp because it is prime and its reverse (9009683) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3869009 - 2¹⁶ = 3803473 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3869009.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3869029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1934504 + 1934505.

It is an arithmetic number, because the mean of its divisors is an integer number (1934505).

Almost surely, 2^3869009 is an apocalyptic number.

It is an amenable number.

3869009 is a deficient number, since it is larger than the sum of its proper divisors (1).

3869009 is an equidigital number, since it uses as much as digits as its factorization.

3869009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 3869009 is about 1966.9796643585. The cubic root of 3869009 is about 156.9880445817.

The spelling of 3869009 in words is "three million, eight hundred sixty-nine thousand, nine".