13934891 has 2 divisors, whose sum is σ = 13934892. Its totient is φ = 13934890.

The previous prime is 13934873. The next prime is 13934929. The reversal of 13934891 is 19843931.

It is a happy number.

It is an a-pointer prime, because the next prime (13934929) can be obtained adding 13934891 to its sum of digits (38).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13934891 is a prime.

It is not a weakly prime, because it can be changed into another prime (13934801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6967445 + 6967446.

It is an arithmetic number, because the mean of its divisors is an integer number (6967446).

Almost surely, 2^13934891 is an apocalyptic number.

13934891 is a deficient number, since it is larger than the sum of its proper divisors (1).

13934891 is an equidigital number, since it uses as much as digits as its factorization.

13934891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 38.

The square root of 13934891 is about 3732.9466912883. The cubic root of 13934891 is about 240.6400220228.

The spelling of 13934891 in words is "thirteen million, nine hundred thirty-four thousand, eight hundred ninety-one".