14978393 has 2 divisors, whose sum is σ = 14978394. Its totient is φ = 14978392.

The previous prime is 14978357. The next prime is 14978417. The reversal of 14978393 is 39387941.

It is a happy number.

14978393 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13741849 + 1236544 = 3707^2 + 1112^2 .

It is an emirp because it is prime and its reverse (39387941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 14978393 - 2¹⁶ = 14912857 is a prime.

It is not a weakly prime, because it can be changed into another prime (14978893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7489196 + 7489197.

It is an arithmetic number, because the mean of its divisors is an integer number (7489197).

Almost surely, 2^14978393 is an apocalyptic number.

It is an amenable number.

14978393 is a deficient number, since it is larger than the sum of its proper divisors (1).

14978393 is an equidigital number, since it uses as much as digits as its factorization.

14978393 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 14978393 is about 3870.1928892498. The cubic root of 14978393 is about 246.5027339863.

The spelling of 14978393 in words is "fourteen million, nine hundred seventy-eight thousand, three hundred ninety-three".