385722229 has 2 divisors, whose sum is σ = 385722230. Its totient is φ = 385722228.

The previous prime is 385722221. The next prime is 385722263. The reversal of 385722229 is 922227583.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 362902500 + 22819729 = 19050^2 + 4777^2 .

It is an emirp because it is prime and its reverse (922227583) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 385722229 - 2³ = 385722221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 385722191 and 385722200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (385722221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192861114 + 192861115.

It is an arithmetic number, because the mean of its divisors is an integer number (192861115).

Almost surely, 2^385722229 is an apocalyptic number.

It is an amenable number.

385722229 is a deficient number, since it is larger than the sum of its proper divisors (1).

385722229 is an equidigital number, since it uses as much as digits as its factorization.

385722229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 40.

The square root of 385722229 is about 19639.8123463540. The cubic root of 385722229 is about 727.9332478394.

The spelling of 385722229 in words is "three hundred eighty-five million, seven hundred twenty-two thousand, two hundred twenty-nine".