838572085 has 12 divisors (see below), whose sum is σ = 1089648612. Its totient is φ = 619252608.

The previous prime is 838572083. The next prime is 838572089. The reversal of 838572085 is 580275838.

It can be written as a sum of positive squares in 6 ways, for example, as 189392644 + 649179441 = 13762^2 + 25479^2 .

It is not a de Polignac number, because 838572085 - 2¹ = 838572083 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (838572083) 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 in 11 ways as a sum of consecutive naturals, for example, 495352 + ... + 497041.

It is an arithmetic number, because the mean of its divisors is an integer number (90804051).

Almost surely, 2^838572085 is an apocalyptic number.

It is an amenable number.

838572085 is a deficient number, since it is larger than the sum of its proper divisors (251076527).

838572085 is a wasteful number, since it uses less digits than its factorization.

838572085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 992424 (or 992411 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 46.

The square root of 838572085 is about 28958.1091406190. The cubic root of 838572085 is about 943.0038526734.

The spelling of 838572085 in words is "eight hundred thirty-eight million, five hundred seventy-two thousand, eighty-five".