12919493 has 4 divisors (see below), whose sum is σ = 12976140. Its totient is φ = 12862848.

The previous prime is 12919483. The next prime is 12919499. The reversal of 12919493 is 39491921.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10252804 + 2666689 = 3202^2 + 1633^2 .

It is a cyclic number.

It is not a de Polignac number, because 12919493 - 2⁶ = 12919429 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 (12919499) 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, 27980 + ... + 28437.

It is an arithmetic number, because the mean of its divisors is an integer number (3244035).

Almost surely, 2^12919493 is an apocalyptic number.

It is an amenable number.

12919493 is a deficient number, since it is larger than the sum of its proper divisors (56647).

12919493 is an equidigital number, since it uses as much as digits as its factorization.

12919493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56646.

The product of its digits is 17496, while the sum is 38.

The square root of 12919493 is about 3594.3696248438. The cubic root of 12919493 is about 234.6470815464.

The spelling of 12919493 in words is "twelve million, nine hundred nineteen thousand, four hundred ninety-three".