12919247 has 4 divisors (see below), whose sum is σ = 14093736. Its totient is φ = 11744760.

The previous prime is 12919243. The next prime is 12919267. The reversal of 12919247 is 74291921.

12919247 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12919247 - 2² = 12919243 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12919241) 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, 587228 + ... + 587249.

It is an arithmetic number, because the mean of its divisors is an integer number (3523434).

Almost surely, 2^12919247 is an apocalyptic number.

12919247 is a deficient number, since it is larger than the sum of its proper divisors (1174489).

12919247 is a wasteful number, since it uses less digits than its factorization.

12919247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1174488.

The product of its digits is 9072, while the sum is 35.

The square root of 12919247 is about 3594.3354044941. The cubic root of 12919247 is about 234.6455922323.

The spelling of 12919247 in words is "twelve million, nine hundred nineteen thousand, two hundred forty-seven".