386944399 has 2 divisors, whose sum is σ = 386944400. Its totient is φ = 386944398.

The previous prime is 386944339. The next prime is 386944451. The reversal of 386944399 is 993449683.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-386944399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (386944309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193472199 + 193472200.

It is an arithmetic number, because the mean of its divisors is an integer number (193472200).

Almost surely, 2^386944399 is an apocalyptic number.

386944399 is a deficient number, since it is larger than the sum of its proper divisors (1).

386944399 is an equidigital number, since it uses as much as digits as its factorization.

386944399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5038848, while the sum is 55.

The square root of 386944399 is about 19670.9023433090. The cubic root of 386944399 is about 728.7012618202.

The spelling of 386944399 in words is "three hundred eighty-six million, nine hundred forty-four thousand, three hundred ninety-nine".