12719445 has 16 divisors (see below), whose sum is σ = 20509632. Its totient is φ = 6730880.

The previous prime is 12719419. The next prime is 12719459. The reversal of 12719445 is 54491721.

It is a happy number.

It is not a de Polignac number, because 12719445 - 2⁹ = 12718933 is a prime.

It is a super-2 number, since 2×12719445² = 323568562216050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1272 + ... + 5201.

It is an arithmetic number, because the mean of its divisors is an integer number (1281852).

Almost surely, 2^12719445 is an apocalyptic number.

12719445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12719445 is a deficient number, since it is larger than the sum of its proper divisors (7790187).

12719445 is a wasteful number, since it uses less digits than its factorization.

12719445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6612.

The product of its digits is 10080, while the sum is 33.

The square root of 12719445 is about 3566.4330920403. The cubic root of 12719445 is about 233.4296688376.

The spelling of 12719445 in words is "twelve million, seven hundred nineteen thousand, four hundred forty-five".