3780009 has 6 divisors (see below), whose sum is σ = 5460026. Its totient is φ = 2520000.

The previous prime is 3779929. The next prime is 3780017. The reversal of 3780009 is 9000873.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 3504384 + 275625 = 1872^2 + 525^2 .

It is not a de Polignac number, because 3780009 - 2⁸ = 3779753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3780059) 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 5 ways as a sum of consecutive naturals, for example, 209992 + ... + 210009.

Almost surely, 2^3780009 is an apocalyptic number.

It is an amenable number.

3780009 is a deficient number, since it is larger than the sum of its proper divisors (1680017).

3780009 is a wasteful number, since it uses less digits than its factorization.

3780009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420007 (or 420004 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 3780009 is about 1944.2245240712. The cubic root of 3780009 is about 155.7749466862.

The spelling of 3780009 in words is "three million, seven hundred eighty thousand, nine".