13723819 has 2 divisors, whose sum is σ = 13723820. Its totient is φ = 13723818.

The previous prime is 13723769. The next prime is 13723867. The reversal of 13723819 is 91832731.

13723819 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13723819 - 2¹³ = 13715627 is a prime.

It is a super-2 number, since 2×13723819² = 376686415889522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13723219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6861909 + 6861910.

It is an arithmetic number, because the mean of its divisors is an integer number (6861910).

Almost surely, 2^13723819 is an apocalyptic number.

13723819 is a deficient number, since it is larger than the sum of its proper divisors (1).

13723819 is an equidigital number, since it uses as much as digits as its factorization.

13723819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 34.

The square root of 13723819 is about 3704.5673161653. The cubic root of 13723819 is about 239.4188427127.

The spelling of 13723819 in words is "thirteen million, seven hundred twenty-three thousand, eight hundred nineteen".