13919663 has 2 divisors, whose sum is σ = 13919664. Its totient is φ = 13919662.

The previous prime is 13919657. The next prime is 13919683. The reversal of 13919663 is 36691931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13919663 - 2¹² = 13915567 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13919603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6959831 + 6959832.

It is an arithmetic number, because the mean of its divisors is an integer number (6959832).

Almost surely, 2^13919663 is an apocalyptic number.

13919663 is a deficient number, since it is larger than the sum of its proper divisors (1).

13919663 is an equidigital number, since it uses as much as digits as its factorization.

13919663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26244, while the sum is 38.

The square root of 13919663 is about 3730.9064582216. The cubic root of 13919663 is about 240.5523332157.

The spelling of 13919663 in words is "thirteen million, nine hundred nineteen thousand, six hundred sixty-three".