13806487 has 2 divisors, whose sum is σ = 13806488. Its totient is φ = 13806486.

The previous prime is 13806473. The next prime is 13806491. The reversal of 13806487 is 78460831.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13806487 - 2¹⁵ = 13773719 is a prime.

It is equal to p₈₉₈₃₃₆ and since 13806487 and 898336 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13806467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6903243 + 6903244.

It is an arithmetic number, because the mean of its divisors is an integer number (6903244).

Almost surely, 2^13806487 is an apocalyptic number.

13806487 is a deficient number, since it is larger than the sum of its proper divisors (1).

13806487 is an equidigital number, since it uses as much as digits as its factorization.

13806487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 13806487 is about 3715.7081424676. The cubic root of 13806487 is about 239.8986087923.

The spelling of 13806487 in words is "thirteen million, eight hundred six thousand, four hundred eighty-seven".