13912643 has 2 divisors, whose sum is σ = 13912644. Its totient is φ = 13912642.

The previous prime is 13912627. The next prime is 13912669. The reversal of 13912643 is 34621931.

It is a weak prime.

It is an emirp because it is prime and its reverse (34621931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13912643 - 2⁴ = 13912627 is a prime.

It is not a weakly prime, because it can be changed into another prime (13912343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6956321 + 6956322.

It is an arithmetic number, because the mean of its divisors is an integer number (6956322).

Almost surely, 2^13912643 is an apocalyptic number.

13912643 is a deficient number, since it is larger than the sum of its proper divisors (1).

13912643 is an equidigital number, since it uses as much as digits as its factorization.

13912643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 29.

The square root of 13912643 is about 3729.9655494388. The cubic root of 13912643 is about 240.5118877600.

The spelling of 13912643 in words is "thirteen million, nine hundred twelve thousand, six hundred forty-three".