13968919 has 2 divisors, whose sum is σ = 13968920. Its totient is φ = 13968918.

The previous prime is 13968907. The next prime is 13968949. The reversal of 13968919 is 91986931.

13968919 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13968919 - 2⁵ = 13968887 is a prime.

It is a super-2 number, since 2×13968919² = 390261396057122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13968949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6984459 + 6984460.

It is an arithmetic number, because the mean of its divisors is an integer number (6984460).

Almost surely, 2^13968919 is an apocalyptic number.

13968919 is a deficient number, since it is larger than the sum of its proper divisors (1).

13968919 is an equidigital number, since it uses as much as digits as its factorization.

13968919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 104976, while the sum is 46.

The square root of 13968919 is about 3737.5017056852. The cubic root of 13968919 is about 240.8357380006.

The spelling of 13968919 in words is "thirteen million, nine hundred sixty-eight thousand, nine hundred nineteen".