13948393 has 2 divisors, whose sum is σ = 13948394. Its totient is φ = 13948392.

The previous prime is 13948387. The next prime is 13948397. The reversal of 13948393 is 39384931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12131289 + 1817104 = 3483^2 + 1348^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13948393 is a prime.

It is a plaindrome in base 15.

It is not a weakly prime, because it can be changed into another prime (13948397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6974196 + 6974197.

It is an arithmetic number, because the mean of its divisors is an integer number (6974197).

Almost surely, 2^13948393 is an apocalyptic number.

It is an amenable number.

13948393 is a deficient number, since it is larger than the sum of its proper divisors (1).

13948393 is an equidigital number, since it uses as much as digits as its factorization.

13948393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69984, while the sum is 40.

The square root of 13948393 is about 3734.7547442904. The cubic root of 13948393 is about 240.7177184264.

It can be divided in two parts, 13948 and 393, that added together give a palindrome (14341).

The spelling of 13948393 in words is "thirteen million, nine hundred forty-eight thousand, three hundred ninety-three".