389603497 has 2 divisors, whose sum is σ = 389603498. Its totient is φ = 389603496.

The previous prime is 389603453. The next prime is 389603549. The reversal of 389603497 is 794306983.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 323604121 + 65999376 = 17989^2 + 8124^2 .

It is a cyclic number.

It is not a de Polignac number, because 389603497 - 2⁷ = 389603369 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 389603497.

It is not a weakly prime, because it can be changed into another prime (389603447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194801748 + 194801749.

It is an arithmetic number, because the mean of its divisors is an integer number (194801749).

Almost surely, 2^389603497 is an apocalyptic number.

It is an amenable number.

389603497 is a deficient number, since it is larger than the sum of its proper divisors (1).

389603497 is an equidigital number, since it uses as much as digits as its factorization.

389603497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 979776, while the sum is 49.

The square root of 389603497 is about 19738.3762503404. The cubic root of 389603497 is about 730.3666744885.

The spelling of 389603497 in words is "three hundred eighty-nine million, six hundred three thousand, four hundred ninety-seven".