389318497 has 2 divisors, whose sum is σ = 389318498. Its totient is φ = 389318496.

The previous prime is 389318453. The next prime is 389318509. The reversal of 389318497 is 794813983.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 295014976 + 94303521 = 17176^2 + 9711^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-389318497 is a prime.

It is not a weakly prime, because it can be changed into another prime (389313497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194659248 + 194659249.

It is an arithmetic number, because the mean of its divisors is an integer number (194659249).

Almost surely, 2^389318497 is an apocalyptic number.

It is an amenable number.

389318497 is a deficient number, since it is larger than the sum of its proper divisors (1).

389318497 is an equidigital number, since it uses as much as digits as its factorization.

389318497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1306368, while the sum is 52.

The square root of 389318497 is about 19731.1554907461. The cubic root of 389318497 is about 730.1885401542.

The spelling of 389318497 in words is "three hundred eighty-nine million, three hundred eighteen thousand, four hundred ninety-seven".