12903819 has 4 divisors (see below), whose sum is σ = 17205096. Its totient is φ = 8602544.

The previous prime is 12903797. The next prime is 12903829. The reversal of 12903819 is 91830921.

12903819 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 12903819 - 2⁸ = 12903563 is a prime.

It is a super-2 number, since 2×12903819² = 333017089569522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12903819.

It is not an unprimeable number, because it can be changed into a prime (12903829) 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, 2150634 + ... + 2150639.

It is an arithmetic number, because the mean of its divisors is an integer number (4301274).

Almost surely, 2^12903819 is an apocalyptic number.

12903819 is a deficient number, since it is larger than the sum of its proper divisors (4301277).

12903819 is an equidigital number, since it uses as much as digits as its factorization.

12903819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4301276.

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 12903819 is about 3592.1886086340. The cubic root of 12903819 is about 234.5521514359.

The spelling of 12903819 in words is "twelve million, nine hundred three thousand, eight hundred nineteen".