12209973 has 4 divisors (see below), whose sum is σ = 16279968. Its totient is φ = 8139980.

The previous prime is 12209971. The next prime is 12209993. The reversal of 12209973 is 37990221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12209973 - 2¹ = 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 3 ways as a sum of consecutive naturals, for example, 2034993 + ... + 2034998.

It is an arithmetic number, because the mean of its divisors is an integer number (4069992).

Almost surely, 2^12209973 is an apocalyptic number.

It is an amenable number.

12209973 is a deficient number, since it is larger than the sum of its proper divisors (4069995).

12209973 is an equidigital number, since it uses as much as digits as its factorization.

12209973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4069994.

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

The square root of 12209973 is about 3494.2771784734. The cubic root of 12209973 is about 230.2704631789.

The spelling of 12209973 in words is "twelve million, two hundred nine thousand, nine hundred seventy-three".