13987093 has 2 divisors, whose sum is σ = 13987094. Its totient is φ = 13987092.

The previous prime is 13987087. The next prime is 13987111. The reversal of 13987093 is 39078931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12909649 + 1077444 = 3593^2 + 1038^2 .

It is a cyclic number.

It is not a de Polignac number, because 13987093 - 2¹³ = 13978901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13987063) 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, 6993546 + 6993547.

It is an arithmetic number, because the mean of its divisors is an integer number (6993547).

Almost surely, 2^13987093 is an apocalyptic number.

It is an amenable number.

13987093 is a deficient number, since it is larger than the sum of its proper divisors (1).

13987093 is an equidigital number, since it uses as much as digits as its factorization.

13987093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 13987093 is about 3739.9322186371. The cubic root of 13987093 is about 240.9401376775.

The spelling of 13987093 in words is "thirteen million, nine hundred eighty-seven thousand, ninety-three".