1209868 has 24 divisors (see below), whose sum is σ = 2386944. Its totient is φ = 531600.

The previous prime is 1209853. The next prime is 1209877. The reversal of 1209868 is 8689021.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 921 + ... + 1807.

It is an arithmetic number, because the mean of its divisors is an integer number (99456).

2^1209868 is an apocalyptic number.

It is an amenable number.

1209868 is a deficient number, since it is larger than the sum of its proper divisors (1177076).

1209868 is a wasteful number, since it uses less digits than its factorization.

1209868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 933 (or 931 counting only the distinct ones).

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

The square root of 1209868 is about 1099.9399983635. The cubic root of 1209868 is about 106.5563486185.

The spelling of 1209868 in words is "one million, two hundred nine thousand, eight hundred sixty-eight".