12209975 has 6 divisors (see below), whose sum is σ = 15140400. Its totient is φ = 9767960.

The previous prime is 12209971. The next prime is 12209993. The reversal of 12209975 is 57990221.

It is not a de Polignac number, because 12209975 - 2² = 12209971 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12209971) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 244175 + ... + 244224.

It is an arithmetic number, because the mean of its divisors is an integer number (2523400).

Almost surely, 2^12209975 is an apocalyptic number.

12209975 is a deficient number, since it is larger than the sum of its proper divisors (2930425).

12209975 is an equidigital number, since it uses as much as digits as its factorization.

12209975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488409 (or 488404 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 12209975 is about 3494.2774646556. The cubic root of 12209975 is about 230.2704757517.

The spelling of 12209975 in words is "twelve million, two hundred nine thousand, nine hundred seventy-five".