13933919 has 2 divisors, whose sum is σ = 13933920. Its totient is φ = 13933918.

The previous prime is 13933877. The next prime is 13933921. The reversal of 13933919 is 91933931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13933919 - 2²⁰ = 12885343 is a prime.

It is a super-2 number, since 2×13933919² = 388308197397122, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 13933921, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13933519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6966959 + 6966960.

It is an arithmetic number, because the mean of its divisors is an integer number (6966960).

Almost surely, 2^13933919 is an apocalyptic number.

13933919 is a deficient number, since it is larger than the sum of its proper divisors (1).

13933919 is an equidigital number, since it uses as much as digits as its factorization.

13933919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19683, while the sum is 38.

The square root of 13933919 is about 3732.8164969631. The cubic root of 13933919 is about 240.6344267741.

The spelling of 13933919 in words is "thirteen million, nine hundred thirty-three thousand, nine hundred nineteen".