852057749 has 2 divisors, whose sum is σ = 852057750. Its totient is φ = 852057748.

The previous prime is 852057743. The next prime is 852057761. The reversal of 852057749 is 947750258.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 481495249 + 370562500 = 21943^2 + 19250^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-852057749 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (852057743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 426028874 + 426028875.

It is an arithmetic number, because the mean of its divisors is an integer number (426028875).

Almost surely, 2^852057749 is an apocalyptic number.

It is an amenable number.

852057749 is a deficient number, since it is larger than the sum of its proper divisors (1).

852057749 is an equidigital number, since it uses as much as digits as its factorization.

852057749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 705600, while the sum is 47.

The square root of 852057749 is about 29190.0282459610. The cubic root of 852057749 is about 948.0320291154.

The spelling of 852057749 in words is "eight hundred fifty-two million, fifty-seven thousand, seven hundred forty-nine".