12993819 has 4 divisors (see below), whose sum is σ = 17325096. Its totient is φ = 8662544.

The previous prime is 12993817. The next prime is 12993821. The reversal of 12993819 is 91839921.

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

It is an interprime number because it is at equal distance from previous prime (12993817) and next prime (12993821).

It is a cyclic number.

It is not a de Polignac number, because 12993819 - 2¹ = 12993817 is a prime.

It is a super-2 number, since 2×12993819² = 337678664409522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12993811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2165634 + ... + 2165639.

It is an arithmetic number, because the mean of its divisors is an integer number (4331274).

Almost surely, 2^12993819 is an apocalyptic number.

12993819 is a deficient number, since it is larger than the sum of its proper divisors (4331277).

12993819 is an equidigital number, since it uses as much as digits as its factorization.

12993819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4331276.

The product of its digits is 34992, while the sum is 42.

The square root of 12993819 is about 3604.6940230760. The cubic root of 12993819 is about 235.0961972241.

The spelling of 12993819 in words is "twelve million, nine hundred ninety-three thousand, eight hundred nineteen".