385679999 has 2 divisors, whose sum is σ = 385680000. Its totient is φ = 385679998.

The previous prime is 385679977. The next prime is 385680017. The reversal of 385679999 is 999976583.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-385679999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (385679699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192839999 + 192840000.

It is an arithmetic number, because the mean of its divisors is an integer number (192840000).

Almost surely, 2^385679999 is an apocalyptic number.

385679999 is a deficient number, since it is larger than the sum of its proper divisors (1).

385679999 is an equidigital number, since it uses as much as digits as its factorization.

385679999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 33067440, while the sum is 65.

The square root of 385679999 is about 19638.7372048205. The cubic root of 385679999 is about 727.9066814481.

The spelling of 385679999 in words is "three hundred eighty-five million, six hundred seventy-nine thousand, nine hundred ninety-nine".