12209397 has 8 divisors (see below), whose sum is σ = 16297056. Its totient is φ = 8130672.

The previous prime is 12209387. The next prime is 12209423. The reversal of 12209397 is 79390221.

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

It is not a de Polignac number, because 12209397 - 2⁷ = 12209269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12209347) 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, 2238 + ... + 5424.

It is an arithmetic number, because the mean of its divisors is an integer number (2037132).

Almost surely, 2^12209397 is an apocalyptic number.

It is an amenable number.

12209397 is a deficient number, since it is larger than the sum of its proper divisors (4087659).

12209397 is a wasteful number, since it uses less digits than its factorization.

12209397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4467.

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 12209397 is about 3494.1947570220. The cubic root of 12209397 is about 230.2668421533.

The spelling of 12209397 in words is "twelve million, two hundred nine thousand, three hundred ninety-seven".