385953857 has 2 divisors, whose sum is σ = 385953858. Its totient is φ = 385953856.

The previous prime is 385953851. The next prime is 385953863. The reversal of 385953857 is 758359583.

It is a balanced prime because it is at equal distance from previous prime (385953851) and next prime (385953863).

It can be written as a sum of positive squares in only one way, i.e., 349278721 + 36675136 = 18689^2 + 6056^2 .

It is a cyclic number.

It is not a de Polignac number, because 385953857 - 2²⁰ = 384905281 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 385953799 and 385953808.

It is not a weakly prime, because it can be changed into another prime (385953851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192976928 + 192976929.

It is an arithmetic number, because the mean of its divisors is an integer number (192976929).

Almost surely, 2^385953857 is an apocalyptic number.

It is an amenable number.

385953857 is a deficient number, since it is larger than the sum of its proper divisors (1).

385953857 is an equidigital number, since it uses as much as digits as its factorization.

385953857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536000, while the sum is 53.

The square root of 385953857 is about 19645.7083608609. The cubic root of 385953857 is about 728.0789277878.

The spelling of 385953857 in words is "three hundred eighty-five million, nine hundred fifty-three thousand, eight hundred fifty-seven".