13207993 has 2 divisors, whose sum is σ = 13207994. Its totient is φ = 13207992.

The previous prime is 13207991. The next prime is 13208023. The reversal of 13207993 is 39970231.

13207993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12482089 + 725904 = 3533^2 + 852^2 .

It is a cyclic number.

It is not a de Polignac number, because 13207993 - 2¹ = 13207991 is a prime.

Together with 13207991, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (13207991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6603996 + 6603997.

It is an arithmetic number, because the mean of its divisors is an integer number (6603997).

Almost surely, 2^13207993 is an apocalyptic number.

It is an amenable number.

13207993 is a deficient number, since it is larger than the sum of its proper divisors (1).

13207993 is an equidigital number, since it uses as much as digits as its factorization.

13207993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10206, while the sum is 34.

The square root of 13207993 is about 3634.2802588683. The cubic root of 13207993 is about 236.3808427630.

The spelling of 13207993 in words is "thirteen million, two hundred seven thousand, nine hundred ninety-three".