12893819 has 2 divisors, whose sum is σ = 12893820. Its totient is φ = 12893818.

The previous prime is 12893809. The next prime is 12893831. The reversal of 12893819 is 91839821.

It is a weak prime.

It is an emirp because it is prime and its reverse (91839821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12893819 - 2⁸ = 12893563 is a prime.

It is a super-2 number, since 2×12893819² = 332501136809522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12893809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6446909 + 6446910.

It is an arithmetic number, because the mean of its divisors is an integer number (6446910).

Almost surely, 2^12893819 is an apocalyptic number.

12893819 is a deficient number, since it is larger than the sum of its proper divisors (1).

12893819 is an equidigital number, since it uses as much as digits as its factorization.

12893819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 41.

The square root of 12893819 is about 3590.7964297632. The cubic root of 12893819 is about 234.4915459239.

The spelling of 12893819 in words is "twelve million, eight hundred ninety-three thousand, eight hundred nineteen".