13919047 has 2 divisors, whose sum is σ = 13919048. Its totient is φ = 13919046.

The previous prime is 13919033. The next prime is 13919051. The reversal of 13919047 is 74091931.

13919047 is digitally balanced in base 2 and base 3, because in such bases 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 13919047 - 2²³ = 5530439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13919027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6959523 + 6959524.

It is an arithmetic number, because the mean of its divisors is an integer number (6959524).

Almost surely, 2^13919047 is an apocalyptic number.

13919047 is a deficient number, since it is larger than the sum of its proper divisors (1).

13919047 is an equidigital number, since it uses as much as digits as its factorization.

13919047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 13919047 is about 3730.8239036438. The cubic root of 13919047 is about 240.5487847001.

The spelling of 13919047 in words is "thirteen million, nine hundred nineteen thousand, forty-seven".