1208869 has 4 divisors (see below), whose sum is σ = 1220940. Its totient is φ = 1196800.

The previous prime is 1208863. The next prime is 1208873. The reversal of 1208869 is 9688021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 664225 + 544644 = 815^2 + 738^2 .

It is a cyclic number.

It is not a de Polignac number, because 1208869 - 2⁷ = 1208741 is a prime.

It is a super-2 number, since 2×1208869² = 2922728518322, which contains 22 as substring.

It is a Duffinian number.

1208869 is a lucky number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1208863) 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, 5884 + ... + 6085.

It is an arithmetic number, because the mean of its divisors is an integer number (305235).

2^1208869 is an apocalyptic number.

It is an amenable number.

1208869 is a deficient number, since it is larger than the sum of its proper divisors (12071).

1208869 is a wasteful number, since it uses less digits than its factorization.

1208869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12070.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 1208869 is about 1099.4857889032. The cubic root of 1208869 is about 106.5270123315.

The spelling of 1208869 in words is "one million, two hundred eight thousand, eight hundred sixty-nine".