147788393 has 2 divisors, whose sum is σ = 147788394. Its totient is φ = 147788392.

The previous prime is 147788371. The next prime is 147788401. The reversal of 147788393 is 393887741.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 146700544 + 1087849 = 12112^2 + 1043^2 .

It is a cyclic number.

It is not a de Polignac number, because 147788393 - 2¹⁰ = 147787369 is a prime.

It is not a weakly prime, because it can be changed into another prime (147788093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73894196 + 73894197.

It is an arithmetic number, because the mean of its divisors is an integer number (73894197).

Almost surely, 2^147788393 is an apocalyptic number.

It is an amenable number.

147788393 is a deficient number, since it is larger than the sum of its proper divisors (1).

147788393 is an equidigital number, since it uses as much as digits as its factorization.

147788393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1016064, while the sum is 50.

The square root of 147788393 is about 12156.8249555548. The cubic root of 147788393 is about 528.7050300529.

The spelling of 147788393 in words is "one hundred forty-seven million, seven hundred eighty-eight thousand, three hundred ninety-three".