12940919 has 16 divisors (see below), whose sum is σ = 14254080. Its totient is φ = 11702880.

The previous prime is 12940909. The next prime is 12940937. The reversal of 12940919 is 91904921.

12940919 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12940919 - 2⁴ = 12940903 is a prime.

It is a super-2 number, since 2×12940919² = 334934769129122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12940909) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74717 + ... + 74889.

It is an arithmetic number, because the mean of its divisors is an integer number (890880).

Almost surely, 2^12940919 is an apocalyptic number.

12940919 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

12940919 is a deficient number, since it is larger than the sum of its proper divisors (1313161).

12940919 is a wasteful number, since it uses less digits than its factorization.

12940919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350.

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 12940919 is about 3597.3488849429. The cubic root of 12940919 is about 234.7767247054.

The spelling of 12940919 in words is "twelve million, nine hundred forty thousand, nine hundred nineteen".