389664343 has 2 divisors, whose sum is σ = 389664344. Its totient is φ = 389664342.

The previous prime is 389664311. The next prime is 389664439. The reversal of 389664343 is 343466983.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 389664343 - 2⁵ = 389664311 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 389664293 and 389664302.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (389668343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194832171 + 194832172.

It is an arithmetic number, because the mean of its divisors is an integer number (194832172).

Almost surely, 2^389664343 is an apocalyptic number.

389664343 is a deficient number, since it is larger than the sum of its proper divisors (1).

389664343 is an equidigital number, since it uses as much as digits as its factorization.

389664343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1119744, while the sum is 46.

The square root of 389664343 is about 19739.9175023605. The cubic root of 389664343 is about 730.4046939774.

The spelling of 389664343 in words is "three hundred eighty-nine million, six hundred sixty-four thousand, three hundred forty-three".