3391209 has 6 divisors (see below), whose sum is σ = 4898426. Its totient is φ = 2260800.

The previous prime is 3391187. The next prime is 3391229. The reversal of 3391209 is 9021933.

It can be written as a sum of positive squares in only one way, i.e., 3027600 + 363609 = 1740^2 + 603^2 .

It is not a de Polignac number, because 3391209 - 2⁷ = 3391081 is a prime.

It is a Duffinian number.

3391209 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3391229) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 188392 + ... + 188409.

Almost surely, 2^3391209 is an apocalyptic number.

It is an amenable number.

3391209 is a deficient number, since it is larger than the sum of its proper divisors (1507217).

3391209 is a wasteful number, since it uses less digits than its factorization.

3391209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376807 (or 376804 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 27.

The square root of 3391209 is about 1841.5235540172. The cubic root of 3391209 is about 150.2397499290.

It can be divided in two parts, 3391 and 209, that added together give a square (3600 = 60²).

The spelling of 3391209 in words is "three million, three hundred ninety-one thousand, two hundred nine".