385916499 has 24 divisors (see below), whose sum is σ = 562882320. Its totient is φ = 254778048.

The previous prime is 385916423. The next prime is 385916513. The reversal of 385916499 is 994619583.

385916499 is a `hidden beast` number, since 3 + 8 + 591 + 6 + 49 + 9 = 666.

It is not a de Polignac number, because 385916499 - 2⁹ = 385915987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (385916299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 543957 + ... + 544665.

It is an arithmetic number, because the mean of its divisors is an integer number (23453430).

Almost surely, 2^385916499 is an apocalyptic number.

385916499 is a deficient number, since it is larger than the sum of its proper divisors (176965821).

385916499 is a wasteful number, since it uses less digits than its factorization.

385916499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1219 (or 1216 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 54.

The square root of 385916499 is about 19644.7575449533. The cubic root of 385916499 is about 728.0554358170.

The spelling of 385916499 in words is "three hundred eighty-five million, nine hundred sixteen thousand, four hundred ninety-nine".