389713069 has 2 divisors, whose sum is σ = 389713070. Its totient is φ = 389713068.

The previous prime is 389713061. The next prime is 389713073. The reversal of 389713069 is 960317983.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 350812900 + 38900169 = 18730^2 + 6237^2 .

It is a cyclic number.

It is not a de Polignac number, because 389713069 - 2³ = 389713061 is a prime.

It is a super-2 number, since 2×389713069² = 303752552298797522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (389713061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194856534 + 194856535.

It is an arithmetic number, because the mean of its divisors is an integer number (194856535).

Almost surely, 2^389713069 is an apocalyptic number.

It is an amenable number.

389713069 is a deficient number, since it is larger than the sum of its proper divisors (1).

389713069 is an equidigital number, since it uses as much as digits as its factorization.

389713069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 244944, while the sum is 46.

The square root of 389713069 is about 19741.1516634669. The cubic root of 389713069 is about 730.4351374573.

The spelling of 389713069 in words is "three hundred eighty-nine million, seven hundred thirteen thousand, sixty-nine".