852344639 has 2 divisors, whose sum is σ = 852344640. Its totient is φ = 852344638.

The previous prime is 852344629. The next prime is 852344651. The reversal of 852344639 is 936443258.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-852344639 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 852344639.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (852344609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 426172319 + 426172320.

It is an arithmetic number, because the mean of its divisors is an integer number (426172320).

Almost surely, 2^852344639 is an apocalyptic number.

852344639 is a deficient number, since it is larger than the sum of its proper divisors (1).

852344639 is an equidigital number, since it uses as much as digits as its factorization.

852344639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 622080, while the sum is 44.

The square root of 852344639 is about 29194.9420105607. The cubic root of 852344639 is about 948.1384187701.

The spelling of 852344639 in words is "eight hundred fifty-two million, three hundred forty-four thousand, six hundred thirty-nine".