3718009 has 4 divisors (see below), whose sum is σ = 3738960. Its totient is φ = 3697060.

The previous prime is 3717979. The next prime is 3718021. The reversal of 3718009 is 9008173.

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 3718009 - 2¹³ = 3709817 is a prime.

It is a Duffinian number.

3718009 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3718069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10207 + ... + 10564.

It is an arithmetic number, because the mean of its divisors is an integer number (934740).

Almost surely, 2^3718009 is an apocalyptic number.

It is an amenable number.

3718009 is a deficient number, since it is larger than the sum of its proper divisors (20951).

3718009 is a wasteful number, since it uses less digits than its factorization.

3718009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20950.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 3718009 is about 1928.2139404122. The cubic root of 3718009 is about 154.9185697840.

The spelling of 3718009 in words is "three million, seven hundred eighteen thousand, nine".