13087493 has 4 divisors (see below), whose sum is σ = 13122048. Its totient is φ = 13052940.

The previous prime is 13087463. The next prime is 13087507. The reversal of 13087493 is 39478031.

13087493 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13087493 - 2⁶ = 13087429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13087463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16703 + ... + 17468.

It is an arithmetic number, because the mean of its divisors is an integer number (3280512).

Almost surely, 2^13087493 is an apocalyptic number.

It is an amenable number.

13087493 is a deficient number, since it is larger than the sum of its proper divisors (34555).

13087493 is an equidigital number, since it uses as much as digits as its factorization.

13087493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34554.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 13087493 is about 3617.6640253069. The cubic root of 13087493 is about 235.6597906118.

The spelling of 13087493 in words is "thirteen million, eighty-seven thousand, four hundred ninety-three".