13404887 has 2 divisors, whose sum is σ = 13404888. Its totient is φ = 13404886.

The previous prime is 13404877. The next prime is 13404889. The reversal of 13404887 is 78840431.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (78840431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13404887 - 2¹⁸ = 13142743 is a prime.

Together with 13404889, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13404889) 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, 6702443 + 6702444.

It is an arithmetic number, because the mean of its divisors is an integer number (6702444).

Almost surely, 2^13404887 is an apocalyptic number.

13404887 is a deficient number, since it is larger than the sum of its proper divisors (1).

13404887 is an equidigital number, since it uses as much as digits as its factorization.

13404887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 13404887 is about 3661.2684960270. The cubic root of 13404887 is about 237.5496450236.

The spelling of 13404887 in words is "thirteen million, four hundred four thousand, eight hundred eighty-seven".