1368209 has 8 divisors (see below), whose sum is σ = 1455840. Its totient is φ = 1282176.

The previous prime is 1368203. The next prime is 1368229. The reversal of 1368209 is 9028631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1368209 - 2⁸ = 1367953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1368203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1697 + ... + 2369.

It is an arithmetic number, because the mean of its divisors is an integer number (181980).

2^1368209 is an apocalyptic number.

1368209 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1368209 is a deficient number, since it is larger than the sum of its proper divisors (87631).

1368209 is a wasteful number, since it uses less digits than its factorization.

1368209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 1368209 is about 1169.7046635797. The cubic root of 1368209 is about 111.0156350565.

The spelling of 1368209 in words is "one million, three hundred sixty-eight thousand, two hundred nine".