385121677 has 2 divisors, whose sum is σ = 385121678. Its totient is φ = 385121676.

The previous prime is 385121629. The next prime is 385121747. The reversal of 385121677 is 776121583.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 201952521 + 183169156 = 14211^2 + 13534^2 .

It is a cyclic number.

It is not a de Polignac number, because 385121677 - 2⁷ = 385121549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (385121377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192560838 + 192560839.

It is an arithmetic number, because the mean of its divisors is an integer number (192560839).

Almost surely, 2^385121677 is an apocalyptic number.

It is an amenable number.

385121677 is a deficient number, since it is larger than the sum of its proper divisors (1).

385121677 is an equidigital number, since it uses as much as digits as its factorization.

385121677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 70560, while the sum is 40.

The square root of 385121677 is about 19624.5172424699. The cubic root of 385121677 is about 727.5552652639. Note that the first 3 decimals are identical.

The spelling of 385121677 in words is "three hundred eighty-five million, one hundred twenty-one thousand, six hundred seventy-seven".