147397 has 2 divisors, whose sum is σ = 147398. Its totient is φ = 147396.

The previous prime is 147391. The next prime is 147401. The reversal of 147397 is 793741.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136161 + 11236 = 369^2 + 106^2 .

It is a cyclic number.

It is not a de Polignac number, because 147397 - 2¹¹ = 145349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (147391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73698 + 73699.

It is an arithmetic number, because the mean of its divisors is an integer number (73699).

147397 is a Friedman number, since it can be written as 9*((3+1)^7-7)+4, using all its digits and the basic arithmetic operations.

2¹⁴⁷³⁹⁷ is an apocalyptic number.

It is an amenable number.

147397 is a deficient number, since it is larger than the sum of its proper divisors (1).

147397 is an equidigital number, since it uses as much as digits as its factorization.

147397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5292, while the sum is 31.

The square root of 147397 is about 383.9231693972. The cubic root of 147397 is about 52.8237888289.

The spelling of 147397 in words is "one hundred forty-seven thousand, three hundred ninety-seven".