852729109 has 2 divisors, whose sum is σ = 852729110. Its totient is φ = 852729108.

The previous prime is 852729103. The next prime is 852729149. The reversal of 852729109 is 901927258.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 722426884 + 130302225 = 26878^2 + 11415^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-852729109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (852729103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 426364554 + 426364555.

It is an arithmetic number, because the mean of its divisors is an integer number (426364555).

Almost surely, 2^852729109 is an apocalyptic number.

It is an amenable number.

852729109 is a deficient number, since it is larger than the sum of its proper divisors (1).

852729109 is an equidigital number, since it uses as much as digits as its factorization.

852729109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 852729109 is about 29201.5257991770. The cubic root of 852729109 is about 948.2809573493.

It can be divided in two parts, 8527 and 29109, that added together give a square (37636 = 194²).

The spelling of 852729109 in words is "eight hundred fifty-two million, seven hundred twenty-nine thousand, one hundred nine".