385422749 has 2 divisors, whose sum is σ = 385422750. Its totient is φ = 385422748.

The previous prime is 385422703. The next prime is 385422761. The reversal of 385422749 is 947224583.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 385336900 + 85849 = 19630^2 + 293^2 .

It is an emirp because it is prime and its reverse (947224583) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 385422749 - 2⁸ = 385422493 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (385422449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192711374 + 192711375.

It is an arithmetic number, because the mean of its divisors is an integer number (192711375).

Almost surely, 2^385422749 is an apocalyptic number.

It is an amenable number.

385422749 is a deficient number, since it is larger than the sum of its proper divisors (1).

385422749 is an equidigital number, since it uses as much as digits as its factorization.

385422749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 483840, while the sum is 44.

The square root of 385422749 is about 19632.1865567746. The cubic root of 385422749 is about 727.7448066272.

The spelling of 385422749 in words is "three hundred eighty-five million, four hundred twenty-two thousand, seven hundred forty-nine".