389640373 has 2 divisors, whose sum is σ = 389640374. Its totient is φ = 389640372.

The previous prime is 389640359. The next prime is 389640397. The reversal of 389640373 is 373046983.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 389549169 + 91204 = 19737^2 + 302^2 .

It is an emirp because it is prime and its reverse (373046983) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 389640373 - 2²⁵ = 356085941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (389649373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194820186 + 194820187.

It is an arithmetic number, because the mean of its divisors is an integer number (194820187).

Almost surely, 2^389640373 is an apocalyptic number.

It is an amenable number.

389640373 is a deficient number, since it is larger than the sum of its proper divisors (1).

389640373 is an equidigital number, since it uses as much as digits as its factorization.

389640373 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 43.

The square root of 389640373 is about 19739.3103476287. The cubic root of 389640373 is about 730.3897168483.

The spelling of 389640373 in words is "three hundred eighty-nine million, six hundred forty thousand, three hundred seventy-three".