13804891 has 2 divisors, whose sum is σ = 13804892. Its totient is φ = 13804890.

The previous prime is 13804883. The next prime is 13804897. The reversal of 13804891 is 19840831.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13804891 - 2³ = 13804883 is a prime.

It is not a weakly prime, because it can be changed into another prime (13804897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6902445 + 6902446.

It is an arithmetic number, because the mean of its divisors is an integer number (6902446).

Almost surely, 2^13804891 is an apocalyptic number.

13804891 is a deficient number, since it is larger than the sum of its proper divisors (1).

13804891 is an equidigital number, since it uses as much as digits as its factorization.

13804891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 13804891 is about 3715.4933723531. The cubic root of 13804891 is about 239.8893645162.

The spelling of 13804891 in words is "thirteen million, eight hundred four thousand, eight hundred ninety-one".