3838643399 has 2 divisors, whose sum is σ = 3838643400. Its totient is φ = 3838643398.

The previous prime is 3838643339. The next prime is 3838643407. The reversal of 3838643399 is 9933468383.

3838643399 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3838643399 - 2²⁴ = 3821866183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3838643339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1919321699 + 1919321700.

It is an arithmetic number, because the mean of its divisors is an integer number (1919321700).

Almost surely, 2^3838643399 is an apocalyptic number.

3838643399 is a deficient number, since it is larger than the sum of its proper divisors (1).

3838643399 is an equidigital number, since it uses as much as digits as its factorization.

3838643399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10077696, while the sum is 56.

The square root of 3838643399 is about 61956.7865451397. The cubic root of 3838643399 is about 1565.7626280337.

The spelling of 3838643399 in words is "three billion, eight hundred thirty-eight million, six hundred forty-three thousand, three hundred ninety-nine".