385105999 has 2 divisors, whose sum is σ = 385106000. Its totient is φ = 385105998.

The previous prime is 385105969. The next prime is 385106009. The reversal of 385105999 is 999501583.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 385105999 - 2¹³ = 385097807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (385105909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192552999 + 192553000.

It is an arithmetic number, because the mean of its divisors is an integer number (192553000).

Almost surely, 2^385105999 is an apocalyptic number.

385105999 is a deficient number, since it is larger than the sum of its proper divisors (1).

385105999 is an equidigital number, since it uses as much as digits as its factorization.

385105999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 437400, while the sum is 49.

The square root of 385105999 is about 19624.1177890880. The cubic root of 385105999 is about 727.5453923960.

The spelling of 385105999 in words is "three hundred eighty-five million, one hundred five thousand, nine hundred ninety-nine".