12977223 has 8 divisors (see below), whose sum is σ = 19774848. Its totient is φ = 7415544.

The previous prime is 12977219. The next prime is 12977233. The reversal of 12977223 is 32277921.

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

It is not a de Polignac number, because 12977223 - 2² = 12977219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12977233) 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, 308961 + ... + 309002.

It is an arithmetic number, because the mean of its divisors is an integer number (2471856).

Almost surely, 2^12977223 is an apocalyptic number.

12977223 is a deficient number, since it is larger than the sum of its proper divisors (6797625).

12977223 is an equidigital number, since it uses as much as digits as its factorization.

12977223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617973.

The product of its digits is 10584, while the sum is 33.

The square root of 12977223 is about 3602.3912891300. The cubic root of 12977223 is about 234.9960645184.

It can be divided in two parts, 129772 and 23, that added together give a triangular number (129795 = T₅₀₉).

The spelling of 12977223 in words is "twelve million, nine hundred seventy-seven thousand, two hundred twenty-three".