3778009 has 4 divisors (see below), whose sum is σ = 3783040. Its totient is φ = 3772980.

The previous prime is 3778007. The next prime is 3778039. The reversal of 3778009 is 9008773.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3778009 - 2¹ = 3778007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3778007) 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 3 ways as a sum of consecutive naturals, for example, 1137 + ... + 2974.

It is an arithmetic number, because the mean of its divisors is an integer number (945760).

Almost surely, 2^3778009 is an apocalyptic number.

It is an amenable number.

3778009 is a deficient number, since it is larger than the sum of its proper divisors (5031).

3778009 is an equidigital number, since it uses as much as digits as its factorization.

3778009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5030.

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 3778009 is about 1943.7101121309. The cubic root of 3778009 is about 155.7474683693.

The spelling of 3778009 in words is "three million, seven hundred seventy-eight thousand, nine".