13748993 has 2 divisors, whose sum is σ = 13748994. Its totient is φ = 13748992.

The previous prime is 13748939. The next prime is 13749007. The reversal of 13748993 is 39984731.

It is a happy number.

Together with previous prime (13748939) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13490929 + 258064 = 3673^2 + 508^2 .

It is a cyclic number.

It is not a de Polignac number, because 13748993 - 2¹² = 13744897 is a prime.

It is not a weakly prime, because it can be changed into another prime (13748093) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6874496 + 6874497.

It is an arithmetic number, because the mean of its divisors is an integer number (6874497).

Almost surely, 2^13748993 is an apocalyptic number.

It is an amenable number.

13748993 is a deficient number, since it is larger than the sum of its proper divisors (1).

13748993 is an equidigital number, since it uses as much as digits as its factorization.

13748993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 44.

The square root of 13748993 is about 3707.9634572094. The cubic root of 13748993 is about 239.5651442742.

It can be divided in two parts, 13748 and 993, that added together give a palindrome (14741).

The spelling of 13748993 in words is "thirteen million, seven hundred forty-eight thousand, nine hundred ninety-three".