389743399 has 2 divisors, whose sum is σ = 389743400. Its totient is φ = 389743398.

The previous prime is 389743391. The next prime is 389743429. The reversal of 389743399 is 993347983.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 389743399 - 2³ = 389743391 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (389743391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194871699 + 194871700.

It is an arithmetic number, because the mean of its divisors is an integer number (194871700).

Almost surely, 2^389743399 is an apocalyptic number.

389743399 is a deficient number, since it is larger than the sum of its proper divisors (1).

389743399 is an equidigital number, since it uses as much as digits as its factorization.

389743399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4408992, while the sum is 55.

The square root of 389743399 is about 19741.9198407855. The cubic root of 389743399 is about 730.4540860332.

The spelling of 389743399 in words is "three hundred eighty-nine million, seven hundred forty-three thousand, three hundred ninety-nine".