1209297 has 8 divisors (see below), whose sum is σ = 1622944. Its totient is φ = 800928.

The previous prime is 1209287. The next prime is 1209311. The reversal of 1209297 is 7929021.

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

It is not a de Polignac number, because 1209297 - 2⁴ = 1209281 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (1209277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 748 + ... + 1725.

It is an arithmetic number, because the mean of its divisors is an integer number (202868).

2^1209297 is an apocalyptic number.

It is an amenable number.

1209297 is a deficient number, since it is larger than the sum of its proper divisors (413647).

1209297 is a wasteful number, since it uses less digits than its factorization.

1209297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2639.

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 1209297 is about 1099.6804081186. The cubic root of 1209297 is about 106.5395828090.

The spelling of 1209297 in words is "one million, two hundred nine thousand, two hundred ninety-seven".