13409287 has 2 divisors, whose sum is σ = 13409288. Its totient is φ = 13409286.

The previous prime is 13409251. The next prime is 13409303. The reversal of 13409287 is 78290431.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13409287 is a prime.

It is a super-3 number, since 3×13409287³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13409087) 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, 6704643 + 6704644.

It is an arithmetic number, because the mean of its divisors is an integer number (6704644).

Almost surely, 2^13409287 is an apocalyptic number.

13409287 is a deficient number, since it is larger than the sum of its proper divisors (1).

13409287 is an equidigital number, since it uses as much as digits as its factorization.

13409287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 13409287 is about 3661.8693313662. The cubic root of 13409287 is about 237.5756331600.

The spelling of 13409287 in words is "thirteen million, four hundred nine thousand, two hundred eighty-seven".