14911993 has 2 divisors, whose sum is σ = 14911994. Its totient is φ = 14911992.

The previous prime is 14911991. The next prime is 14912021. The reversal of 14911993 is 39911941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9566649 + 5345344 = 3093^2 + 2312^2 .

It is an emirp because it is prime and its reverse (39911941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 14911993 - 2¹ = 14911991 is a prime.

Together with 14911991, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (14911991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7455996 + 7455997.

It is an arithmetic number, because the mean of its divisors is an integer number (7455997).

Almost surely, 2^14911993 is an apocalyptic number.

It is an amenable number.

14911993 is a deficient number, since it is larger than the sum of its proper divisors (1).

14911993 is an equidigital number, since it uses as much as digits as its factorization.

14911993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8748, while the sum is 37.

The square root of 14911993 is about 3861.6049772083. The cubic root of 14911993 is about 246.1379412325.

The spelling of 14911993 in words is "fourteen million, nine hundred eleven thousand, nine hundred ninety-three".