385919999 has 2 divisors, whose sum is σ = 385920000. Its totient is φ = 385919998.

The previous prime is 385919993. The next prime is 385920047. The reversal of 385919999 is 999919583.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 385919999 - 2²⁴ = 369142783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (385919993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192959999 + 192960000.

It is an arithmetic number, because the mean of its divisors is an integer number (192960000).

Almost surely, 2^385919999 is an apocalyptic number.

385919999 is a deficient number, since it is larger than the sum of its proper divisors (1).

385919999 is an equidigital number, since it uses as much as digits as its factorization.

385919999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7085880, while the sum is 62.

The square root of 385919999 is about 19644.8466270419. The cubic root of 385919999 is about 728.0576367994.

The spelling of 385919999 in words is "three hundred eighty-five million, nine hundred nineteen thousand, nine hundred ninety-nine".