389710913 has 2 divisors, whose sum is σ = 389710914. Its totient is φ = 389710912.

The previous prime is 389710847. The next prime is 389710931. The reversal of 389710913 is 319017983.

Together with next prime (389710931) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 336245569 + 53465344 = 18337^2 + 7312^2 .

It is a cyclic number.

It is not a de Polignac number, because 389710913 - 2¹⁸ = 389448769 is a prime.

It is a super-2 number, since 2×389710913² = 303749191422587138, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (389710933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194855456 + 194855457.

It is an arithmetic number, because the mean of its divisors is an integer number (194855457).

Almost surely, 2^389710913 is an apocalyptic number.

It is an amenable number.

389710913 is a deficient number, since it is larger than the sum of its proper divisors (1).

389710913 is an equidigital number, since it uses as much as digits as its factorization.

389710913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 41.

The square root of 389710913 is about 19741.0970566481. The cubic root of 389710913 is about 730.4337904653.

The spelling of 389710913 in words is "three hundred eighty-nine million, seven hundred ten thousand, nine hundred thirteen".